Leica Apo-Summicron-M 75mm f/2 11637 User Manual
Product codes
11637
LEICA APO-SUMMICRON-M 75 mm f/2 ASPH.
1
The compact high-performance telephoto lens
The new LEICA APO-SUMMICRON-M 75mm f/2 ASPH. extends the range of telephoto lenses in the Leica M system with a fast
high-performance model that is simultaneously extremely compact.
high-performance model that is simultaneously extremely compact.
75mm - The universal portrait focal length
With its more natural perspective compared to a 90mm focal length, where depth is reproduced with less compression, it is ideal-
ly suited for many applications including reportage and portraits - particularly in smaller rooms. Its small dimensions result in not
only outstanding handling but also a Leica M viewfinder image that is almost completely free of shadowing, thus allowing totally
undisturbed viewing of the subject. Whether you are using full stop to deliberately "isolate" critical parts of the subject or working
in high-contrast available light - both very common in applications with these focal lengths - or stopping down for sharp reproduc-
tion of more extensive areas of the subject, the LEICA APO-SUMMICRON-M 75mm f/2 ASPH. is convincing in any situation: At full
stop, it offers excellent contrast reproduction, even for very fine structures. This performance can only be slightly improved by
stopping down. Another outstanding feature is the extremely low distortion of only 1%. The vignetting that is normal for fast len-
ses at their maximum opening - up to approx. 1 stop in the corners of the image here - is further reduced by stopping down: At
f/2.8, it is negligible, except for the extreme corners and at f/5.6 it is negligible even in the corners.
ly suited for many applications including reportage and portraits - particularly in smaller rooms. Its small dimensions result in not
only outstanding handling but also a Leica M viewfinder image that is almost completely free of shadowing, thus allowing totally
undisturbed viewing of the subject. Whether you are using full stop to deliberately "isolate" critical parts of the subject or working
in high-contrast available light - both very common in applications with these focal lengths - or stopping down for sharp reproduc-
tion of more extensive areas of the subject, the LEICA APO-SUMMICRON-M 75mm f/2 ASPH. is convincing in any situation: At full
stop, it offers excellent contrast reproduction, even for very fine structures. This performance can only be slightly improved by
stopping down. Another outstanding feature is the extremely low distortion of only 1%. The vignetting that is normal for fast len-
ses at their maximum opening - up to approx. 1 stop in the corners of the image here - is further reduced by stopping down: At
f/2.8, it is negligible, except for the extreme corners and at f/5.6 it is negligible even in the corners.
The use of state of the art coating technology and additional measures for dulling the inner parts of the mount also ensure a high
degree of freedom from reflection. The optical system comprises seven lens elements in five groups. As on the recently introdu-
ced Summilux 50mm ASPH., they are a new version of the double Gauß lens type, with the first three lens elements correspon-
ding to the typical Gauß design. The elements behind the aperture are very similar to those on the Summilux 50mm ASPH. - apart
from the use of a single lens instead of one of the two cemented lens element groups.
To achieve the excellent imaging performance, glass with anomalous partial dispersion is used (no. 2/3). Lens element no. 2 is
made of a fluorite-type glass, while the glass used for lens element 3 can trace its origins back to the former Leitz glass laborato-
ry. Lens element no. 4 has a pressed aspherical surface. To minimize monochromatic aberrations, as well as having an aspherical
shape the glass used is also highly refractive (no. 5/6).
degree of freedom from reflection. The optical system comprises seven lens elements in five groups. As on the recently introdu-
ced Summilux 50mm ASPH., they are a new version of the double Gauß lens type, with the first three lens elements correspon-
ding to the typical Gauß design. The elements behind the aperture are very similar to those on the Summilux 50mm ASPH. - apart
from the use of a single lens instead of one of the two cemented lens element groups.
To achieve the excellent imaging performance, glass with anomalous partial dispersion is used (no. 2/3). Lens element no. 2 is
made of a fluorite-type glass, while the glass used for lens element 3 can trace its origins back to the former Leitz glass laborato-
ry. Lens element no. 4 has a pressed aspherical surface. To minimize monochromatic aberrations, as well as having an aspherical
shape the glass used is also highly refractive (no. 5/6).