LEICA ELMARIT-M 28 mm f/2.8 1

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1 LEICA ELMARIT-M 8 mm f/.8 This is a classic standard wide-angle lens: It delivers very good imaging performance at full aperture. Its barrel distortion is very small and unobtrusive. In cases where light sources are included in the picture area, unwanted reflections and flare are very rare. Therefore this lens is the right one for situations that do not require an extremely wide angle of view, but where regular mm lenses do not provide sufficient wide-angle characteristics. This lens is particularly popular among professional photographers. Lens shape

2 LEICA ELMARIT-M 8 mm f/.8 Engineering drawing Technical Data Angle of view (diagonal, horizontal, vertical) Optical design Distance setting Diaphragm Bayonet Filter (type) Lens hood Dimensions and weight 7, 6, 46 Number of elements / groups: 8 / 7 Focal length: 8. mm Entrance pupil:. mm (related to the first lens surface in light direction) Focusing range:.7 m to Infinity Scale: combined meter/feet-increments Smallest object field: mm x mm Highest reproduction ratio: :. Setting / Type: with clickstops (including half values), manual diaphragm Smallest aperture: f/ Leica M quick-change bayonet internal thread for screw-in type filters E 46 separate, clip-on type, lockable Length: 4.4 mm Largest diameter: mm Weight: approx. g

3 LEICA ELMARIT-M 8 mm f/.8 MTF graphs [%] Aperture Stop.8 [%] Aperture Stop 8. [%] Aperture Stop.6 The MTF is indicated both at full aperture and at f/.6 at long taking distances (infinity). Shown is the contrast in percentage for,, and lp/mm accross the height of the mm film format, for tangential (dotted line) and sagittal (solid line) structures, in white light. The and lp/mm will give an indication regarding the contrast ratio for large object structures.the and lp/mm records the resolution of finer and finest object structures. sagittal structures tangential structures

4 LEICA ELMARIT-M 8 mm f/.8 4 Distortion [%] Relative Distortion Effective Distortion X [mm] Vignetting [%] Distortion is the deviation of the real image height (in the picture) from the ideal image height. The relative distortion is the percentage deviation. The ideal image height results from the object height and the magnification. The image height of.6mm is the radial distance between the edge and the middle of the image field for the format 4mm x 6mm. The graph of the effective distortion illustrates the appearance of straight horizontal and vertical lines in the picture. Vignetting is a continous decrease of the illumination to the edges of the image field. The graph shows the percentage lost of illumination over the image height. % means no vignetting. sagittal structures tangential structures

5 LEICA ELMARIT-M 8 mm f/.8 Depth of field table Aperture Stop Magnification,8 4,6 8 6,7,64 -,74,67 -,779,6 -,86,84 -,879, -,97,4 -,94,48 -,6 /,,8,79 -,87,77 -,97,689 -,99,6 -,49,8 -,9, -,4,49 -,4 /,7,94 -,,87 -,78,88 -,7,77 -,48,7 -,79,6 -,66,8-7, /,8,,6 -,, -,47,97 -,6,88 -,9,4 -,47,7-4,9,6 - /9,9,,89 -,798,8 -,9,4 -,8,8 -,847,9-4,4,788-9,9,67 - /,,67 -,78, -,94,9 -,67, -,8,8-7,8,899 -,7 - /68,,4-4,9, -,8, - 9,47, - 4,,6 -,46 -,848 - /4,8 -,8,767-7,7, -,9 -,68 -,4 -,946 - /7 8, - 6,79-4, -,6 -,4 -, -,44 - / Aperture Stop,8,7,8,, Aperture Stop 4,7,8,,

6 LEICA ELMARIT-M 8 mm f/.8 6 Aperture Stop,6,7,8,, Aperture Stop 8,7,8,, Aperture Stop,7,8,,

7 LEICA ELMARIT-M 8 mm f/.8 7 Aperture Stop 6,7,8,, Aperture Stop,7,8,, Leica Camera AG / Oskar-Barnack-Straße / D-6 Solms / Telefon +49 () / Telefax +49 () / info@leica-camera.com