Introduction V *1. Every care has been taken to assure that your Mamiya M S will provide you with years of trouble-free service.

Transcription

1 Mamiya M S

2 V *1 Introduction The Mamiya M S is a new, improved model of the M645, a camera widely acclaimed for bridging the gap between largeand small-format cameras. The purpose of the 645 format is to provide users with the advantages of a larger negative but have the handling ease of a professional 35mm camera. Every care has been taken to assure that your Mamiya M S will provide you with years of trouble-free service. However, to avoid possible mishandling, please read this manual carefully.

3 Contents AM Lever Moving Coil Electronic Shutter Aperture Ring!Stop-down / Operation.._....._ Multiple Exposures Battery Check Names of and Parts Functions of Parts..... _ 5 5 Care of the Camera Precautions Delayed Shutter Release......_ Shutter Release and and Film Film Transport Mechanism Depth-of-Field Preview Lever Shutter Speed Dial Dial Depth-of-Field _... _ Special Features of of the the M645 M S 1000S 1 Film Advance Specifications 3 3 Film Loading._ Testing Camera Functions Focusing Screens The Neck Strap Strap Focusing Time Exposures Holding the Camera Securely Troubleshooting Infrared Photography Unloading Film Film Inserting the Battery.._ _..._ Using a Tripod Tripod Interchanging Finders_ Lenses Using Flash Interchanging Lenses Finders Using the the CdS CdS Prism Prism Finder de r_._... _._... _ Interchanging the the Film Film Advance Advance Crank Using Using the the PD PD Prism Prism Finder Finder S S Mirror Mirror Lock-up Lock-up Using Using the the Waist Waist-Level Finder Finder S S 42 42

4 \ Special Features of the M S 5. Interchangeable Finders Lightweight, Dual action Waist Level Finder S A compact and light-weight finder that opens and closes with a single touch. The Waist Level Finder S is ideal for copying, close ups, low and high angle photo graphy and working in dim light. Additionally, it is instantly convertible to an eye level sports finder which accurately shows the field for the 80, 110, 150 and 210mm lenses, enabling one to easily follow the action. 1. Large Negative The 6 x 4.5cm format offers approximately three times more area than the 35mm format. Moreover, unlike the 6 x 6cm square format, there is little waste of the negative area. For beautiful color enlargements every time, the 6 x 4.5cm format is ideal. 2. Compact Design Despite the large negative, the Mamiya M S is designed to handle as easily as a professional 35mm SLR. Its compact size and light weight are perfectly suited for the action photographer. It fits so well into ones hands that it becomes an extension of one's reflexes. Prism Finder The Prism Finder is well suited for action photography. Whether the horizontal or vertical format is utilized, focusing and following the action is as easy as using a 35mm SLR. 3. Mamiya's Moving Coil Electronic Shutter Mamiya has developed a revolutionary Moving Coil Electronic Shutter for the M645. Electrical consumption of this new shutter is approximately 1/10 that of previous shutters. Furthermore, consumption remains constant regardless of the shutter speed being used. In addition to accuracy, long battery life is assured with this shutter. PD Prism Finder The PD Prism Finder employs silicon cells for full-aperture, center-weighted readings. It is your assurance that every negative will be correctly exposed. 4. Large, Bright Viewfinder It is easy to catch the action while looking through the large, bright viewfinder. Because of the Mamiya M645's automatic diaphragm and quick-return mirror, the viewfinder never goes dim. It is always bright and ready for the next photograph. 1 CdS Prism Finder with Built-in Meter Accurate through-the-lens exposure measurement is possible with the CdS Prism Finder, which couples to the lens' aperture ring and indicates the correct shutter speed for the selected aperture.

5 6. Flatness of the Film Plane Developed through Mamiya's long experience with 120/220 roll-film cameras, the Roll Film Inserts for the Mamiya M645 keep the film perfectly flat for edge-to edge sharpness. Inserts are available for both 120 and 220 roll film. Two Shutter Release Buttons The Mamiya M645 is equipped with two ideally located Shutter Release Buttons, so regardless of how you hold the camera, there is always a Shutter Release Button at your fingertips, 7. Multi-Coated Lenses Mamiya-Sekor lenses are world-renown as professional lenses for exceptional contrast, high resolution, clear definition, and excellent color balance. All of the lenses for the M645, from wide angle to telephoto, have been multi-coated to maintain their high standard to performance, even under adverse lighting, Built-in Delayed Shutter Release Depth-of-Filed Preview Lever A single touch of the Depth-of-Field Preview Lever, which is ideally located on the camera body, stops the lens down to the working aperture so you can view the depth-of-field. 8. Unlimited Scope A full range of accessories are available for the Mamiya M645 to assist the photographer in capturing virtually any type of image. Accessories include hand grips, interchangeable focusing screens, and auto extension rings, complete with meter couping. Multiple Exposure Provision By lowing the Multiple Exposure Lever, the photographer may create as many multiple-exposure images as desired. During multiple-exposure photography, the Film Counter does not advance. Mirror Lock-up The Mamiya M645 is designed to produce minimal mirror vibration; however, when it is necessary to completely eliminate vibrations, the mirror may be locked in the up position. Mirror Lock-up makes close-up and telephoto photography possible even at slow shutter speeds. 2

6 Specifications Focusing Screen: The standard focusing screen, which is interchangeable, has three focusing aids: a central split-image rangefinder spot (wedge set at 45 degrees) surrounded by a microprism collar and outer ground glass ring. A Fresnel lens assures corner-corner brightness, and 94% of the picturetaking frame is visible. Camera Body Camera Type: 6 x 4.5cm electronic focal-plane shutter SLR Film Type: 120 roll film for 15 exposures 220 foll film for 30 exposures Mirror: Instant return with a mirror lock-up provision. Actual Negative Size: 56 x 41.5mm (2 13/64 x 1 41/64") Film Transport: A single revolution of the interchangeable film-advance crank transports the film. The camera is equipped with double exposure prevention, but multiple exposures can be easily made. Standard Lenses: Mamiya-Sekor C (multi-coated) 80mm f/1.9, automatic diaphragm, with meter coupler, 67mm filter size, Exposure Counter: Progressive type, automatic reset, automatic changeover with insertion of a 120 or 220 film insert. Mamiya-Sekor C (multi-coated) 80mm f/2.8, automatic diaphragm, with meter coupler, 58mm filter size Battery Check: Depressing the B.C. Button illuminates a green LED if the battery condition is satisfactory. Lens Mount: Mamiya M645 bayonet mount Shutter: B 8-1/1000 sec Moving Coil Electronic Focal-Plane FP and X (1/60 sec) synchronization Shutter release lock and shutter speed dial lock Multiple Exposures: Lowing the Multiple Exposure Lever enables creating multiple exposure images. The Film Counter will not advance in this mode. Delayed Shutter Release: Variable delay from 5-10 seconds. 3

7 Depth-Field Preview Lever Spring-loaded, self returning Interchangeable Finders Prism Finder: The image in the Prism Finder is right-side up, laterally correct and moves in the right direction; magnification of 0.74x with the standard lens at infinity; a built-in hotshoe; an eyecup. Waist-Level Finder S: Opens and closes with a single touch; magnification of 1.3x (with standard lens at infinity); diopter correction lenses interchangable with standard magnifier; built-in sports finder shows field for standard lens and accepts a mask for the 110, 150 and 210mm lenses; all fields show approximately 80% of the picture-taking area. Dimensions and Weight: (width, height, depth with f/1.9 80mm lens) PD Prism Finder: The PD Prism Finder has a built-in silicon cell, through-the-lens, center-weighted metering: 7 LEDs in the viewfinder indicate correct or compensated exposure, with ASA 100 and the f/1.9 lens; meter coupling range of of EV to +19 (f/1.9, 8 sec. to 1/1000 sec.); with the 2.8 lens, EV 0 to 19 (f/2.8, 8 sec. to 1/1000 sec.); camera body battery is the power source; other features same a Prism Finder. CdS Prism Finder: A Prism Finder with CdS through-the-lens, full aperture control, center-weighted metering; zero method with indicator needle; couples to the aperture ring; shutter speed manually set; uses one silver oxide SR44 or one alkaline LR44 battery; at 100 ASA and the f/1.9 lens: meter coupling range is EV 2.85 to 17 (f/1.9, 1/2 sec. - f/11, 1/1000 sec.); with f/2.8 lens: EV 4 to 18 (f/2.8 1/2 sec. - f/16, 1/1000 sec.); other features same as Prism Finder. ()NA/Mist-Level Finder S) 3-29/3T x " x MN" (99.3 x 100 x 166.5mm) 55.4 az (w/2.8 lens) 49.6 oz (1570 a) (1405 a) (w/prism Finder) 3-29/32" x ' x " (99.3 x x 166.5mm) 62.3 az 56.4 oz (1765 g) (1600 g) (w/pd Prism Finder S) 3.29/32' x ' x " ( x166.5rnm) 66.5 az (1;;. g) (1720 g) (wicds Prism Finder) " x ' x 6-9/16' (99.3 x x 166.5mm) Depth w1/30mm 4 (w/1.9 lens) 60.7 oz 67.2 oz 61.4 az (1905 g) (1740 g) f12.6 lens; 6-1/16" (154mm)

8 Names of Parts Camera Body Focusing Screen Battery Check Lamp Focusing Screen Lug Finder Mounting Guide Flash Sync Terminals Alignment Dot Neck Strap Lug Shutter Speed Alignment Mark Shutter Speed Dial Depth-of-Field Preview Shutter Release Button Lens Release Button Delayed Shutter Release Lever Shutter Release Lock Ring Mirror 5

9 Battery Check Button Film Plane Mark Back Latch Cover Upper Shutter Release Button Back Cover Mirror Lock-up Lever Memo Clip Film Advance Crank Exposure Counter Window Multiple Exposure Lever 6

10 Cover Latch Latch Battery Chamber Cover Battery Chamber Cover Tripod Socket Tripod 7 7

11 Lens Focusing Ring Distance Scale Depth-of-Field Scale Alignment Dot Aperture Ring AM Lever Exposure Meter Coupler 8

12 Roll Film Insert Leader Paper Guide Marks Start Mark Film Spool Stud Release Latch Take-up Spool Stud Film Type Index (120 or 220) Spool Clip 9

13 Prism Finder Hotshoe Eyepiece Eyecup Finder Release Button 10

14 PD Prism Finder S Aperture Ring Coupling Pin Meter Switch Hotshoe Eyepiece Shutter Speed Dial Eyecup ASA Window Diopter Lens Retaining Ring Finder Release Button 11

15 CdS Prism Finder Aperture Ring Coupling Pin Shutter Speed Dial Hotshoe Power Switch Eyepiece ASA Dial Eyecup ASA Window Diopter Correction Lens Retaining Ring Finder Release Button Battery Chamber Cover 12

16 Waist-Level Finder S Sports Finder eyepiece Sports Finder Frame for Normal Lens Finder Hood Opening Flange Auxiliary Mask Magnifier Release Alignment Dot for Changing Magnifier Finder Release Button 13

17 Testing Camera Functions To release the shutter when there is no film in the camera, proceed as follows: 1. Insert a battery into the camera. 2. Set the Multiple Exposure Lever to "MULTI". 3. Set the Shutter Speed Dial to any setting other than the red concentric circle 4. Turn the Film Advance Crank clocwise until it stops. 5. Align the Shutter Release Lock Ring with the white dot, and then release the shutter. When you are ready to load the camera with film, return the Multiple Exposure Lever to its normal position. If the lever is not in its normal position, the film will not advance. If the shutter is released without a battery in the camera, the mirror will lock in the up position. To return the mirror to its normal position, depress the Battery Check Button as far as it will go. If the shutter is released with the Shutter Speed Dial set to the red concentric circle position the mirror will lock in the up position. To lower the mirror, turn the Shutter Speed Dial to either its 'B' or 1/1000 setting. k..*, A... _ At times, it may be necessary to rotate the Film Advance Crank two full turns to cock the shutter when an empty take-up spool is in the camera. 14

18 Interchanging Lenses Removing the Lens Cap While pressing the Lens Release Button (13), turn the Body Cap counter cockwise until the red dots are aligned, and then lift the cap out of the camera body. Attaching Lenses While aligning the alignment dots (33, 4), insert the lens into the camera body, and then twist the lens clockwise until it clicks and locks into place. 15 Removing Lenses While depressing the Lens Release Button (13), grasp the part of the lens barrel that has the Depth-of-Field Scale (32) and twist the lens counterclockwise until it stops. Lift the lens out of the camera body.

19 Interchanging Finders Attaching a Finder All of the M645 finders are interchanged in the same way: Prior to attaching the finder to the camera, confirm that the white dot on the Finder Release Button is pointing up. If the white dot on the button is aligned with the white dot on the finder, depress and release the button; the white dot on the button will automatically point up. In this state, the button cannot be pressed. Consequently, the finder cannot be accidentally detached from the camera. Place the rear part of the finder on the camera body while holding the front part of the finder slightly upward. Slide the rear part forward until it stops, and then gently lower the finder onto the camera body, The finder will lock into place 16

20 Removing a Finder 1. Turn the Finder Release Button clockwise until it stops (about 60 degrees). 2. Push the Finder Release Button in. 3. While pushing the Finder Release Button with your thumb, lift the finder off the camera. CAUTION Do not leave both white dots aligned while the finder is attached to the camera as the finder may become detached if the Finder Release Button is pressed. If you press the Finder Release Button until the white dot faces up, push the finder down on the camera body to re-lock it into place. 17

21 Focusing Screens Five different focusing screens are available to meet various photographic requirements. Removing a Focusing Screen 1. Remove the finder. 2. Grasp the Focusing Screen Lug (2), and then pull up on the lug and lift the screen out of the camera. Installing a Focusing Screen 1. Remove the finder. 2. Gently insert the screen into place and lightly push it in on both sides until it stops. CAUTION Since the rear surface of the screen is made of plastic, be careful not to scratch the screen when installing or removing it. 18

22 Installing the Battery The Mamiya M645 uses one 6v silver oxide (4SR44) or one 6v alkaline battery (4LR44). CAUTION: 1. Carefully wipe the battery's contacts with a clean, dry cloth before inserting the battery into the camera. 1. Pull the Battery Chamber Latch (26) slightly toward the lens and the Chamber Cover will open. 2. If the camera will not be used for a while, remove the battery from the camera. 3. Properly dispose of used batteries. 2. Insert the battery into the chamber making sure that the polarity of the battery matches the diagram in the chamber. 3. Make sure that the Battery Removal Ribbon (A) passes under and over the battery. 4. An unused battery may loose some of its charge, even if the battery is stored in a cool, dry place. Consequently, check the condition of a battery after installing it into the camera by using the Battery Check Button. 19

23 Battery Check The Mamiya M645 is designed for use with either silver oxide or alkaline batteries. Although both types of batteries provide good performance, silver oxide batteries last longer. Note: When using the PD Prism Finder, be sure to use silver oxide batteries. To check the condition of the battery, depress the Battery Check Button (21) and observe the Battery Check Lamp (8). If the lamp does not light, it is time to replace the battery. IMPORTANT: If the battery is completely exhausted, an open shutter will not close. Push the Battery Check Button down all the way and the shutter will close. 20

24 Loading Film a 1. While gently pushing in on the Memo Clip (19), move the Back Latch Cover (17) in the direction of the arrow and the Back Cover will open, 2. While squeezing in on both sides of the Release Latch (37), pull the Roll Film Insert out of the camera body. Pull out and lower the Spool Clips found on the left-hand side Align the right-hand side of an empty film spool with the lower Spool Stud (41), and then return the Spool Clip to its former position, making sure that the spool is properly held in place by the Spool Clip.

25 4. In the same manner, insert a roll of film in the upper compartment. 5. Make sure that the black side of the paper leader faces up. 6. Gently pull out some of the leader, pulling it over and around the pressure plate. 7. Insert the tip of the leader into the slot in the take-up spool Gently rotate the take-up spool in the direction of the arrow until the Start Mark of the film is aligned with Start Mark on the Spool Clip (36).

26 Using Roll Film Designed for Six Exposures NOTE: Never load film in direct sunlight. Load it in the shade or a shadow cast by your body. 1. Load the film in a 120 insert using the regular procedure. There will be seven exposures. The 120 and 220 film inserts are loaded identically. The exposure counter advances to 15 when using 120 film and to 30 when using 220 film. 2. After seven exposures, set the Shutter Speed Dial to 1/500, wind the Film Advance Knob and release the shutter four more times. The Exposure Counter Window will indicate "11". Be sure to match the type of Film Insert with the film, 120 or 220, that you are using. If 120 film is used in a 220 insert, it is possible that the leader may get caught in the shutter, which could result in damage. 3. Wind the Film Advance Knob one more time so that the Exposure Counter indicates "12". Before placing the film in the Film Insert, make sure that the leader paper on the take-up spool lies flat and evenly spaced between the two edges of the take-up spool. The leader on the take-up spool should be would sufficiently tight to prevent the leader from riding over the edges of the spool. Always align the Start Marks on the film and the Insert before placing film into the camera Completely wind the remaining leader around the take-up spool. * If the film is completely wound onto the take-up spool, there is a possibility of the tip of the leader getting caught in the shutter curtain and causing damage.

27 KTIZHROME S AL kip The Memo Clip, located on the Back Cover, can hold the box top from the roll film container, serving as a reminder of the type of film loaded in the camera. 1. Grasp both sides of the Release Latch (37) making sure that the Film Type Index (42) is not upside down, and then place the Film Insert straight into the camera body. After the Film Insert is completely inside the camera body, release the latch (37). The Memo Clip also acts as a safety lock to prevent the Back Cover from accidentally opening. 2. Press in the the edges of the Release Latch and the Film Insert will lock into place. If the Film Insert does not go all the way in on the right-hand side, turn the Film Advance Crank slightly while pushing in on the right side of the insert. 3. After insertion is completed, securely close the Back Cover. If the Film Advance Crank moves too much when pushing in the insert, the first frame may be fogged. Tar LIGkr 24

28 Film Advance Shutter Speed Dial 1. After the film has been placed into the camera, make sure that the Multiple Exposure Lever (25) is aligned with the white dot on the camera body. 1. Set the shutter speed of your choice by turning the Shutter Speed Dial (12) in either direction while pushing the Safety Lock, located in the center of the dial, in. 2. Wind the Film Advance Crank clockwise until it stops. The number "1" will appear in the Exposure Counter Window (20). The shutter is now cocked, and the camera is ready for the first exposure. 2. Color Coding (a) Green figures represent full seconds, all other figures represent the denominator of a fraction, i.e. "30" indicates 1/30 sec. (b) Orange represents caution The shutter speeds displayed in orange are too slow for hand holding the camera. (c) The red "B" is the BULB exposure. The shutter will remain open as long as the Shutter Release Button is pushed in. 25

29 (d) The red 60X is the highest shutter speed for flash photography. (e) The red concentric circle is selected when using the PD Prism Finder. o If the shutter is released with the Shutter Speed Dial set to the setting, the shutter will lock in the open position. If the camera is left in this state, the battery will deplete within several hours. Moving the Shutter Speed dial to either the "B" or "1/1000" setting will close the shutter. Aperture Ring / Stop-down Operation Set the desired f/stop on the Aperture Ring(34) by aligning the f/number with the red Reference Dot (A). The Aperture Ring has a click-stop at each f/number. Intermediate setting may also be used. o While gently pressing in on the Lock Release Button, the Shutter Speed Dial may be set to any click-stop position, and then locked into place by releasing the Lock Button. Depth-of-Field Preview Lever With the AM Lever (29) in the Auto Position (the letter "A" is visible), push all the way upward on the Depth-ofField Preview Lever to stop the lens down to the working aperture and view the depth-of-field. Release the lever and the lens will open to its widest aperture. The Shutter Speed Dial cannot be set to intermediate positions. To use the Depth-of-Field Preview Lever with the 70mm f/2.8 leaf-shutter lens, set the lens Shutter Speed Ring to the "F" (focal plane) Index Mark. AM Lever Moving the AM Lever (29) to the "M" position will stop the lens down to the working aperture. 26

30 Focusing 1. While looking through the viewfinder, adjust the focusing ring (30) until the most important part of the subject appears sharp. 2. Extremely accurate focusing is simplified by the split-image rangefinder spot located in the center of the focusing screen. Its wedge is set at a 45 angle, making it possible to use either horizontal or vertical lines of the subject for precise focusing. The splitimage rangefinder spot is surrounded by a microprism collar which fractures the image whenever it goes slightly out-of-focus; consequently, it is an invaluable aid for pinpoint focusing accuracy. 3. The outer ground glass ring (which encircles the microprism collar) can also be used for focusing. Since the Mamiya M645 is an SLR, the photographer always sees in the viewfinder exactly what will appear on the film, regardless of the lens or accessory being used. 27 Moreover, simply moving the depth-offield preview lever upward will allow one to preview the depth-of-field and appearance of out-of-focus images. * As an accessory, Mamiya offers diopter correction lenses which can be attached to the prism finders, and diopter lenses for the waist-level finder. Near and farsighted persons will find these accessories useful for obtaining accurate focus.

31 Film Advance and Transport Mechanism \ 0 A B The shutter release button is equipped with a lock ring to prevent accidental release of the shutter. 1. When you wish to release the shutter, turn the shutter release lock ring so that the white dot (B) is aligned with the dot (A) on the camera body. 2. Aligning the red dot (C) of the shutter release lock ring with the dot on the camera body will simultaneously lock both shutter release buttons. * After the fixed number of exposures has been taken (15 or 30), the shutter release button automatically locks. *If the film is advanced while depressing the shutter release button, the shutter will be released at the instant the film is fully advanced. Do not attempt to take pictures in this manner as a degree of camera shake is inevitable. * If the PD Prism Finder is not attached to the camera body and the shutter is released with the shutter speed dial set to position, the mirror will lock in the raised position and the shutter 1. When releasing the shutter, you may use either the front or upper shutter will remain open. (Moving the shutter speed dial to B or 1/1000 sec. will lower release button. the mirror and close the shutter.) 2. After releasing the shutter, the film * Use of the multiple-exposure lever advance crank is automatically unis explained on page 50. locked, making it possible to transport * The front shutter release button is the film to the next frame. threaded to accept cable releases. Please notice the following points regarding the film transport mechanism: *Do not strongly depress the upper shutter release button while simulta* A built-in safety lock prevents the neously advancing the film. If this is shutter from being released if the film done, the film advance automatic stop advance crank is not fully wound or if mechanism will be disengaged, and the exposure counter is between S the film will advance even during the and 1 operation of the shutter. Moreover, the 28

32 Unloading Film mirror may lock in the up position, which results in rapid depletion of the battery. Should the mirror lock in the raised position for the above reason, first continue to rotate the film advance crank until it stops (after the fixed number of exposures (15 or 30) have been taken, the film advance crank should be rotated more than one full turn), then lower and raise the mirror lock-up lever, and the mirror will return to its normal position, simultaneously terminating needless electrical consumption (The only time it is necessary to strongly depress the upper shutter release button is in the event that the mirror locks in the raised position upon releasing the shutter when working at extremely low temperatures. At such a time, if the film is advanced afler first strongly depressing the release button, then lower and raise the mirror lock-up lever, the mirror will lower and the camera will be ready for the next exposure.) 1. After the fixed number of exposures have been taken (15 for 120, 30 f o r 220) the shutter release button will lock. At that time, wind the film advance crank until the leader paper is completely wound onto the take-up spool. (When winding is complete, resistance will no longer be felt on the film advance crank.) 2. Open the back cover, remove the roll-film insert and the exposure counter will reset to S (Start). The exposure counter will not reset to S if the insert is not removed. 3. Remove the film from the film insert, exercising care that the film does not loosen, and seal it. 29,

33 The Neck Strap -. 0 Holding the Camera Securely - - Place the neck strap fastener over the neck strap lug on the camera body and gently pull it away from the camera while pressing it toward the body until it clicks and locks in place. 0 While pushing in on the rear blade of the neck strap fastener with your thumb, slide it forward and remove it. 30

34 Waist-Level Operation Waist-Level Operation..41a 11 31

35 Hand Grips 0 When hand-holding the camera with the waist-level finder attached, adjust the length of the neck strap to take up all slack and support the camera against the body. As accessories, Mamiya offers a selection of hand grips which not only help to eliminate camerashake, but are also convenient for carrying the camera. 32

36 Using the PD Prism Finder S Special Features 1. The PD Prism Finder S is an eye-level finder with a built-in silicon photo diode exposure meter and an electronic shutter control circuit. 2. The PD Prism Finder offers complete coupling of the lens aperture, shutter speed and film speed. 3. Seven LEDs are built into the viewfinder system. A GREEN LED indicates correct exposure and RED LEDs indicate over, under and compensated exposures. 4. The built-in meter covers a broad range, is highly accurate, even in dim light, and has a rapid response because of it silicon diodes. Specifications Viewfinder: 0.74 x magnification with the standard lens at infinity; built-in hotshoe; includes an eyecup Metering System: Center weighted, through-the-lens, full aperture metering; one green and six red LEDs in the viewfinder indicate exposure Meter Coupling Range: With f/1.9 lens and ASA 100 film: EV to +19; 8 sec. - f/22 1/1000 sec. With f/2.8 lens and ASA 100 film: EV 0 to 19; f/2.8 8 sec. - f/22 1/1000 sec. Shutter Speed Range: 1/1000 sec. to 8 sec. ASA Range: Since the PD Prism Finder uses the camera's battery, a timer is incorporated into the finder's circuit to prevent unnecessary electrical consumption. 1. Set the Shutter Speed Dial to the PD Prism Finder position O located between "B" and "1/1000". If the Shutter Speed Dial is set to any other position, the finder will not electrically couple with the camera and the viewfinder's LEDs will not illuminate.

37 ASA i la E 15: NI i :30,1 [ IA p31 112E49 I1COD) Be sure to check for proper coupling before photographing. If the ring and the pin are not properly coupled, use a pen, or similar device, to push the pin into its correct position. 4. Pull out and turn the ASA Dial (B) until the correct ASA number is displayed in the ASA Window. Always set the AM Lever to the "A" setting, otherwise correct metering cannot be obtained. Do not touch the Depth-of-Field Preview Lever when making an exposure. mu [30i c/9i C2B1 /ID 97) II Clfil 165, poi C25I 26.0 [241. (23) m. C22I [21.1..' in e (6) { ) e (16) le0d) ik 51:1 i4 ) i [39i {MI MI ) IMO) 2. Attach the PD Prism Finder to the camera body. 3. Turn the Aperture Ring so that the Exposure Meter Coupler (35) and the Aperture Ring Coupling Pin (A) engage. 12 I N {15}

38 5. Push in and release the Meter Switch (C) to turn on the meter. With the meter on, and while looking through the viewfinder, adjust the Aperture Ring (34), or the Shutter Speed Dial (D), until the central GREEN LED in the right-hand side of the of the viewfinder illuminates. This indicates a correct exposure. The Shutter Speed Dial has click stops at one full top intervals and cannot be set to intermediate speeds. The meter circuit will remain on as long as the Meter Switch is pressed. After releasing your finger from the switch, the circuit will remain on for approximately 15 seconds, and then circuit will automatically turn off to conserve battery power. The PD Prism Finder Shutter Speed Dial has a strong click stop at 1/1000 to enable the user to tell by touch when the speed changes from 1/500 or 8 sec. to 1/1000. If two LEDs illuminate simultaneously, make fine adjustments with the Aperture Ring until the cen tral GREEN LED appears brightest. Remember to adjust the shutter speed using the PD Finder's Shutter Speed Dial and to keep the camera's Shutter Speed Dial set to r~,. 35

39 Correct Exposure Measurement Exposure Compensation 0 The LED Panel incorporated into the PD Prism Finder simplifies exposure compensation, assuring perfect exposures everytime. Each LED represents a full stop increment and plus and minus signs are indicated within the viewfinder to assist in compensating. The uppermost LED represents three or more stops overexposure, and the lowermost LED represents three or more stops underexposure. e Compensation Hints 1. For strongly back-lit subjects outdoors, set the exposure to + 1 (the red LED directly above the green one). 2. To photograph a person indoors, seated next to a window and strongly back-lit, set exposure to When photographing interiors, to compensate for the bright interior lights, set exposure to +1 or When copying white documents, set exposure to +2. If a standard gray card is used to determine exposure, no correction is necessary. 5. When photographing a brightly lit subject against a dark background, such as a night club performer, set exposure to - 1 or Brightly lit night scenes, such as city streets, are usually rendered most naturally with the correct exposure (green LED). 7. When photographing extremely dark subjects (e.g. close-up of a black cat), set exposure to - 1. * The exposure compensation or LED panel can also be used to increase the ASA range to For example, with the ASA dial set to 25, instead of using the green LED for correct exposure, use the +3 LED when using ASA 3 film. * Since the upper and lowermost LED s represent 3 or more stops difference from the central (green) LED, whenever compensating by 3 stops, first adjust the aperture or shutter speed for 2 stops of compensation and then move the aperture ring or shutter speed dial one more click stop for 3 stops of compensation. *The TTL metering system of your PD Prism Finder makes it unnecessary to consider such factors as the difference in angle of view of interchangeable lenses, filter factors, or exposure increase for macrophotography. (For accurate exposure measurement when taking close-ups, be sure to carefully read the instructions packed with the auto bellows, reverse ring, etc.) *In macrophotography, the amount of light reaching the film varies in accordance with the extension of the auto bellows, extension rings, etc. Consequently, for accurate results be sure to first focus on the subject before taking an exposure measurement, *To prevent extraneous light from entering the eyepiece and influencing the exposure reading, keep your eye close to the eyecup when making an exposure measurement I:.

40 Using the CdS Prism Finder Inserting the Battery Special Features Before inserting the battery into the Battery Chamber, wipe the battery with a dry, soft cloth to remove any dirt or other contaminates. 1. The CdS Prism Finder is an eye-level finder with a built-in CdS exposure meter for accurate exposure measurement. 2. It couples to the Aperture Ring when it is attached to the camera. 3. An exposure meter needle indicator is visible in the viewfinder, and its position indicates correct exposures. Specifications Viewfinder: Unreversed, laterally correct image; 0.74 magnification with the standard 80mm lens set at infinity; built-in hotshoe; eyecup Metering System: Center-weighted TTL full aperture, zero-method needle indicator Meter Coupling Range: With f/1.9 lens and ASA 100 film: EV ; f/1.9, 1/2 sec. - f/11, 1/1000 sec. With f/2.8 lens and ASA 100 film: EV 4-18; f/2.8, 1/2 sec. - f/16, 1/1000 sec. Shutter Speed Range: 1/ sec. ASA Range: with aperture coupling the entire range Power Source: One 1.5 V silver oxide SR44 battery or alkaline LR44 battery Remove the Battery Chamber Cover by turning it counterclockwise using a coin or screwdriver. 2. The underside of the Battery Chamber Cover has a + mark. Be sure to have the + marks on the battery and the Battery Chamber Cover face each other when you insert the battery, and then tighten the Battery Chamber Cover. If the finder will not be used for some time, remove the battery and store it in a cool, dry place. Never throw used batteries into a fire or attempt to charge a battery.

41 Method of Use 4. Set the AM Lever to the "A" position, If the AM Lever is set to "M", correct exposures cannot be obtained. 5. Do not touch the Depth-of-Field Preview Lever when making exposure measurements. 1. Attach the CdS Prism Finder to the camera body. 2. Turn the Aperture Ring so that the Aperture Meter Coupler (35) and the Aperture Ring Couping Pin (A) engage. 3. Check for proper coupling. If the Aperture Ring Coupling Pin is not properly engaged with the Aperture Meter Coupler, use a pen or similar object to push the Aperture Ring Coupling Pin into its proper position. 38

42 5. Set the shutter speed on the camera's Shutter Speed Dial to the desired setting, and then set the shutter speed on the CdS Prism Finder's Shutter Speed Dial to the same setting. 3. Set the CdS Prism Finder to the film's ASA speed by pulling out the the ASA Dial (B) and turning it until the correct speed is displayed is opposite the white index mark in the ASA Window. 4.Turn the Exposure Meter Switch to ON. Examples of recommended shutter speeds when using ASA 100 film would be: 1/250 or 1/125 outdoors on a sunny day; 1/125 or 1/60 outdoors on a cloudy day, and 1/30 when photographing indoors. 6. To set the correct exposure, rotate the Aperture Ring until the Exposure Indicator Needle in the viewfinder is centered between the two brackets on the right-hand side of the focusing screen. 39

43 Aperture Priority Method If the Indicator Needle cannot be centered even after turning the Aperture Ring as far as it will go, the exposure must be adjusted by turning the CdS Prism Finder's Shutter Speed Dial. If the Indicator Needle is too high, set the finder's Shutter Speed Dial to a faster speed; if it is too low, set the finder's Shutter Speed Dial to a slower speed. After adjusting the exposure using the finder's Shutter Speed Dial the Indicator Needle is slightly off-center, make fine adjustments by turning the Aperture Ring. When adjusting exposures using the finder's Shutter Speed Dial, do not use any intermediate positions; always set the dial to a full click-stop setting. Exposure Compensation The brackets in the viewfinder are notched at +- 2 f/stops to simplify exposure compensation for unusual lighting situations. When the Exposure Meter Switch is set to OFF, the Indicator Needle rests at the bottom position. After adjusting exposures by turning the finder's Shutter Speed Dial, be sure to set the camera's Shutter Speed Dial to the same speed. CccrEct Exposure: 1. When desiring to set the aperture first, set the Aperture Ring to the desired f/stop, and then adjust the exposure by rotating the camera's Shutter Speed Dial until the Indicator Needle is centered between the two brackets. 2. Check the setting of finder's Shutter Speed Dial, and then set the same speed as on the camera's Shutter Speed Dial. CFF 40

44 Meter Coupling Range The range of usable shutter speeds varies with the film speed (ASA). As the shutter speeds shown in the shaded areas of the table are beyond the range of the meter, the Shutter Speed Dial has a lock to prevent using a speed in the non-usable zone. For example, 1/8 sec. in the the non-usable zone when using ASA 800, or faster, film. Consequently, when the an ASA speed of 800, or faster, is set on the finder's ASA Window, the Shutter Speed Dial cannot be set to 1/8 sec. ASA To conserve battery power, keep the Exposure Meter Switch to OFF whenever the meter is not in use. To obtain optimum results, follow the same precautions outlined in the PD Prism Finder Section. Whenever the finder is removed from the camera, the Exposure Meter is automatically switched OFF via a small switch built into the bottom of the finder // / / / //// / ff /// Shutter Speeds (sec.) A / / /ilj :17 /G/ r" A

45 Using the Waist-Level Finder S Opening the Finder Pull up on the Finder Hood Opening Latch to open the finder. \ Closing the Finder Hood First, push in on the sides of the finder, and then push the Font Cover and the Back Cover together to fold the finder. 42 Raising the Magnifier Push the Magnifier Release Button to raise the Magnifier.

46 Lowering the Magnifier -_ Interchanging Magnifiers 0 To lower, push down on the edge of the magnifier board until it locks into place. Removing the Magnifier While holding the finder side panels with the left hand so that the magnifier board (A) is not lowered, grasp the edge of the magnifier with the fingers of the right hand and twist counterclockwise to remove. Attaching a Magnifier Align the white dots of the magnifier and magnifier board; drop magnifier into magnifier board, and twist clockwise until magnifier clicks and locks into place. 43 * In addition to the standard magnifier (-1.5 diopters), magnifiers of + 2, +l, 0, - 2, and - 3 diopters are available for near and farsighted users. The standard -1.5 diopter magnifier is designed for users, whether eyeglass wearers or not, that have no trouble seeing a subject 2.5 ft. (70cm) away clearly. For those who have difficulty seeing clearly at such a distance, or for those who wish to remove their eyeglasses in order to see the entlre focusing screen field, please use a diopter lens which is available as an optional accessory However, before making a purchase, try the diopter lens at your Mamiya dealer to make sure it matches your eye.

47 Using the Sports Finder With the Waist-Level Finder S in the closed position, first raise the Sports Finder Eyepiece (B) to a vertical position. The Eyepiece Sight folds into the Eyepiece Base. When lifted out out of the base, the Eyepiece Sight will stay in a vertical position because of the eyepiece spring. Next, lift the Wire Frame (C). As the Waist-Level Finder Hood can be raised even with the Sports Finder Mask raised, focusing and be quickly and easily checked. However, if the Finder Hood is opened first, the Sports Finder Wire Frame cannot be raised. Using the Auxiliary Mask The Sports Finder's Wire Frame indicates the view for the 80mm lenses. When using the 110, 150 or 210mm lenses, the Auxiliary Mask must be attached to the Wire Frame. To open the Waist-Level Finder's Hood when Auxiliary Mark is attached to the Wire Frame, pull the bottom of the Auxiliary Mark out to the second notch; this will prevent the Auxiliary Mask from blocking the Finder Hood. 44 Setting the Auxiliary Mask to the second notch does not affect the accuracy of the indicated fields; therefore, it is acceptable to use the Sports Finder in this condition. Also, when the Auxiliary Mask is set to the second notch, it is posible to lower it over the closed finder hood, although it is reccomended to remove the Auxiliary Mask before lowering the Wire Frame to prevent scratching the surface of the plastic frame.

48 Moving Coil Electronic Shutter The electrical consumption of Mamiya's newly developed Moving Coil Electronic Shutter is only 1/10 that of the electromagnetic system currently in wide use. 1. The moving coil is closed Moreover, the consumption remains constant regardless of the shutter speed, which greatly increases battery life. Furthermore, battery performance is maintained at a high level, as indicated in the accompanying diagrams. The moving coil condenser is normally charged, which keeps the battery at peak voltage, and from drops in voltage when the switch is turned on. Thefirst first blind opening The blindmoves, moves, opening the shutter when the Shutter Relthe, shuitat wheal the Release, ease Button is pressed lb pressed -WAY'._.., - % I' MC I The moving coil condenser (B) is normally charged. At this time, no current is flowing. 3. The3.InsOnt of emposure The instant of exposure r rficrer), Whenthe theiirs1 first bind blind rnmees, moves, the When theexposure empasiss time cancirnsar condenser (A)(A) begins charge. The trns topstochwqm Thu right hand latch holds backwell the second rigen-hkriclialchlowlisv chi stand blind. Thechkrgo charge10,4 time,44 of condenser (A) is h.ml Ihrp unknor Os.) determined by did the ierpail shutter U464. speed. chiermiuk-a 4_ 4. SiEt Orld ShilAtbag MINA& Second blind movesblind closing the shutter me sholtar PAC -L. El A Vihen corolenssr rk reaches Gar delerarrined %Vine. candenser When condenser (A) reaches the deterdacha-gas arief t* mined voltage,1.4t1(-11 condenser (B)pas discharges, earl pnq which energizes themores movinglha coilsicced and moves Cviiikl et the second curtain latch. 45 Coftloner crimps Condenserthieciet_TM (B) charges. The chargein-* time rsisvirry was Vile veryshort short end and uses little tarchn,al electrical power power.

49 Depth-of-Field ' 1 I 'El oat !Walk. I I I '2 Depth-of-field refers to the total area (foreground and background) which will appear in focus (sharp). The area of sharpness (depth-of-field) depends upon the distance the lens is focused at, the f/stop (or aperture) being used, and the focal length of the lens. The area that will appear sharp can be determined in three ways: 1. The Depth-of-Field can be directly viewed on the focusing screen by gently pushing the Depth-of-Field preview lever upward, as far as it will go. When released, the spring-loaded lever will return to its original position and at the same time, the diaphragm of the lens will return to maximum aperture for bright viewing. 2. The depth-of-field can also be determined by referring to the depth-of-field scale engraved on the lens and which lies directly above the aperture ring. The f/stop numbers are engraved on both the right and left-hand sides of the center reference mark. Simply locate the f/stop (aperture) you are using and read the figures which appear above the f/stop number on the distance scale of the lens. For example, with the 80mm f/2.8 lens focused at 10ft. (3m) and the aperture ring set to f/16, the depth-of-field scale reveals that everything from about 7ft. (2m) to about 20ft. (6m) will appear sharp (see photograph). 3. The lens can also be-stopped down to the preselected aperture for direct viewing of the Depth-of-Field by using the AM lever on the lens instead of the camera Depth-of-Field preview lever. To do so, move the lever so that M (Manual) is visible. You can take a picture in this condition while observing the Depth-of-Field. *When desiring to use the Depth-of-Field preview lever with the 70mm f/2.8 lens (w/built-in between-the-lens shutter), first set the shutter speed ring of the lens to F (Focal plane shutter) index mark. 46

50 Using Flash \ 1. Flash units may be attached to the camera's tripos socket, the accessory shoe or to a hand grip, 2. The M645 has two sync terminals, which are used, as follows: (1) When using an electronic flash, plug the synchronization cord into the X-sync terminal and set the shutter speed to 1/60 sec. or longer. (2) When using FP flashbulbs, plug the flash cord into the FP sync terminal and set the shutter speed to 1/60 sec. or a faster speed. Precaution When Using Flash When using the X-sync terminal, be sure to insert the plastic cover over the hotshoe, and when using the hotshoe, be sure to insert the plastic safety cover in the X-sync terminal. The safety terminals prevent the possibility of an electric shock when using an electronic flash unit. (3) For MF and M bulbs, use the X-sync terminal and set the shutter speed to 1/30 sec. or longer for MF bulbs, and 1/15 sec. or longer for M-type bulbs. The Prism and PD Prism Finder are equipped with a hotshoe and offer cordless flash operation with flash units that have a hotshoe contact. If the flash duration of an electronic flash unit is longer than 1/1000 sec., set the Shutter Speed Dial to 1/30 sec. or longer. Whenever using flash, carefully read the instructions that came with the unit to avoid making errors. Flash Synchronization Chart &int Terrnio ,...D SOU I 2 s a 123 FP FP Class Shutter Speeds 6lb '5,_{I -1- JI 14 1 I 2 Electronic Rash X lyif Glass ki. FP Glasses 47 4 V

51 Multiple Exposures Infrared Photography 3 0CD o ft i I l till IFEII I I I When using infrared film, it is necessary to make a focus adjustment in order to achieve a sharp image. A focus adjustment is especially important when: a) Using a non wide-angle lens b) Taking close-ups c) Photographing at wide apertures When the Multiple Exposure Lever's white dot is aligned with "MULTI", the double-exposure mechanism is disengaged so that the shutter can be cocked using the Film Advance Crank, but the film will not advance and the Film Counter Window will not display the next frame. To make multiple exposures, set the Multiple Exposure Lever to "MULTI", either before or after the initial multiple exposure, and then continue to make multiple exposures by rotating the Film Advance Crank, and then releasing the shutter. Focus Adjustment Procedure 1. The red dot or line on the right side of the center reference line is the infrared mark. 2. After focusing in the usual manner, read the distance on the Distance Scale that is aligned with the center reference mark on the lens, and then make the focus adjustment by turning the Focusing Ring slightly in the direction of the arrow so that the distance observed is aligned with the infrared mark. To end multiple-exposure photography, return the Multiple Exposure Lever to its white dot (normal) position. To release the shutter when there is no film in the camera, set the Multiple Exposure Lever to "MULTI". 48 For information about filters and exposures, read the information that accompanies the film.

52 Mirror Lock-up When the camera is mounted on a tripod and you are shooting at slow shutter speeds, the small amount of vibration caused when the mirror returns to its down position may cause blurring of the image. Mirror vibration may be eliminated by locking the mirror in the up position before making an exposure. 1. To lock the mirror in the up position, move the Mirror Lock-up Lever (23) backwards until it is horizontal. The lever may be moved either before or after cocking the shutter. 2. With the shutter cocked, release the shutter using a cable release, and then cock the shutter, which may be done with the mirror in the up position. 3. Return the mirror to its down position when you have finished mirror lock-up photography. For mirror lock-up photography with the 70mm leaf-shutter lens, refer to the instructions included with the lens. 49

53 Using the Delayed Shutter Release..~.. Attach the camera to a tripod or place it on a firm support. (If the camera support protrudes beyond the front of the camera body, cock the delayed shutter release before placing it on the support). 1. Advance the film and cock the shutter with the film advance crank 2. Cock the delayed shutter release by rotating the lever (14) clockwise When fully rotated (approx. 180 ) there will be a 10 sec. delay, and when rotated approximately 90, there will be a 5 sec delay before the shutter is released (Rotating the lever less than 90 will fail to cock the delayed shutter release.) When the spring-loaded delayed shutter release lever (14) is released, it will return to its original position, xposing the activating lever (A) Push the activating lever in the direction of the engraved arrow to start the delayed shutter release. 4. The upper shutter release button will move when the delayed shutter release is activated. Do not advance the film until the upper shutter release button returns to its normal (raised) position. *If desiring to stop the delayed shutter release after it has already started, merely reset the lever (14) and it will stop. *Even after cocking the delayed shutter release, the shutter can be tripped.

54 Interchanging the Film Crank with the Shutter release button, bypassing the delayed shutter release, as often as desired *If the delayed shutter release is inadvertently started when the shutter is uncocked, it will stop after partially functioning. Then, reset the lever, advance the film, and push the activating lever to start the delayed shutter release. If the film is advanced, at such a time, before resetting the delayed shutter release,the delayed shutter release will automatically commence operating the moment the film is fully advanced, tripping the shutter a few moments later. For the same reasons outlined above, the shutter release lock ring should also be set to the unlocked position before starting the delayed shutter release. *When attaching the camera to a large, professional tripod, the camera support may protrude beyond the front of the camera body However, if the camera is attached to such a tripod with the accessory Mamiya Quick-shoe model 2, it will be possible to cock the delayed shutter release with the camera attached to the tripod. Removing the Crank 1. Rotate the Film Advance Crank until it stops. 2. Then, rotate it counterclockwise about 20 degrees while pushing in on the Release Lever (A), and the crank will detatch. 51 Attaching the Crank 1. Align the red dot (B) on the camera body with index line (C) on the Film Advance Crank. 2. With the red dot and the index line in alignment, push the Film Advance Crank onto the receptor, twist about 20 degrees clockwise while pushing in on the Release Lever (A), and it will lock into place. The Film Advance Crank is inter changeable with the Film Advance Knob, which is available as an optional accessory.

55 Attaching the Knob Detaching the Knob When changing the Film Advance Knob or Crank, first rotate it until it stops and the shutter is cocked. If this is not done, the Camera Body Receptor, and red dot (B), will freely rotate, making it difficult to make the replacement. 1. Rotate the Film Advance Knob Receptor clockwise as far as it will go. The red dot (B) will then be facing upward. 2. With the Release Lever (D) at its lowest position, place the knob against the Knob Receptor, and then rotate the knob about 20 degree clockwise. The knob will lock into place. 1. Rotate the Film Advance Knob until it stops. 2. While holding the Release Lever (D) in the up position with a small screwdriver, or similar tool, rotate the knob counterclockwise and it will disengage from the camera body. 52

56 Using a Tripod Time Exposures There are two methods that can be used to create time exposures with the M645: For optimum sharpness, we recommend using 1/125 sec. as the minimum shutter speed when hand-holding the camera. For longer exposures, use a sturdy tripod. 1. For standard tripods with a 1/4-20 thread, the camera may be directly attached to the tripod. 2. For tripods with the larger 3/8 thread, unscrew the small screw in the base of the camera's tripod socket. Next, remove the 1/4-20 adapter (A) by unscrewing it with a coin or straight-blade screwdriver. Finally, attach the tripod to the camera's tripod socket. To completely eliminate all camera movement, use a tripod, lock the mirror in the up position, and use a cable release to fire the shutter Set the Shutter Speed Dial to "B", and then use a cable release with a lock provision to activate the shutter. When the exposure is complete, release the lock on the cable release. 2. Remove the battery from the camera. a) Remove the battery. b) Set the Shutter Speed Dial to any setting. c) Depress the Shutter Release Button, the shutter will lock in the open position. d) To close the shutter, fully depress the Battery Check Button.