LensTip.com

Lens review

Leica Summicron-M 50 mm f/2.0

27 October 2009
Arkadiusz Olech

8. Vignetting

Leica M9 in its menu offers the user a function called Lens Auto Detection, which after enabling recognizes the lens, and writes its focal length in EXIF, and also has the information on its aberrations. Thanks to that, automatic vignetting correction is possible. Turning this function off makes the camera body not recognize the lens and correct its aberrations. That’s how we tested the vignetting of Summicron-M 50 mm f/2.0.

The manufacturer, in their specification, clearly shows that vignetting of the tested lens is quite large, as show on the graph below.

Leica Summicron-M 50 mm f/2.0 - Vignetting



Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Our measurements basically confirm what we see above. At the maximum aperture, the light falloff in the corners of the frame reaches as much as 57% (-2.4 EV). After stopping down to f/2.8 the problems decreases to the level of 37%, and at f/4.0 of 20%. Vignetting becomes basically unnoticeable at f/5.6 and f/8.0, where it reaches 14% and 11% respectively.

Leica Summicron-M 50 mm f/2.0 - Vignetting


Leica Summicron-M 50 mm f/2.0 - Vignetting