LensTip.com

Lens review

Leica Apo-Summicron-M 75 mm f/2.0 Asph

18 June 2010
Arkadiusz Olech

10. Focusing

The APO-Summicron-M 75 mm f/2.0, as it befits a good manual lens, has a distance scale on its barrel which, combined with the rangefinder/viewfinder mechanism, after some practice allows you to set the focus needed very precisely.

Leica Apo-Summicron-M 75 mm f/2.0  Asph - Focusing




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The producer prepared a special PDF format document for each lens, containing detailed data concerning the depth of field of a given instrument. In the case of the tested lens, at the maximum relative aperture, when you set the focus at 5 meters we get a sharp image from 4.7 to 5.3 meters. On stopping down to f/4.0 and without changing the position of the focus ring, the depth of field will increase, ranging from less than 4.5 to over 5.6 meters.