The LEICA SUMMARIT-M 75mm f/2.5 is short telephoto lens that offers superb
image quality and ideal for portrait shots and shots up close. The natural
perspective provided by this focal length shows well-differentiated contours,
without the subject losing any of its lifelike and natural appearance. Even at
full aperture, the lens demonstrates excellent imaging capability with
outstanding contrast over the entire image field.
The double-Gauss type construction with six elements in four groups, three in
front of and three behind the diaphragm, with the last lens positioned slightly
closer to the focal plane to reduce the bulging of the image field. Four
elements are made of special glass with anomalous partial dispersion and two of
them are also high index glass. Maximum light falloff in the corners is around
1.5 stops at full aperture in the 35 mm format. Stopping down to f/4 reduces
this light falloff to a negligible level. The extremely low distort...
The LEICA SUMMARIT-M 75mm f/2.5 is short telephoto lens that offers superb
image quality and ideal for portrait shots and shots up close. The natural
perspective provided by this focal length shows well-differentiated contours,
without the subject losing any of its lifelike and natural appearance. Even at
full aperture, the lens demonstrates excellent imaging capability with
outstanding contrast over the entire image field.
The double-Gauss type construction with six elements in four groups, three in
front of and three behind the diaphragm, with the last lens positioned slightly
closer to the focal plane to reduce the bulging of the image field. Four
elements are made of special glass with anomalous partial dispersion and two of
them are also high index glass. Maximum light falloff in the corners is around
1.5 stops at full aperture in the 35 mm format. Stopping down to f/4 reduces
this light falloff to a negligible level. The extremely low distortion of just
0.8 % is essentially invisible in all practical applications.