Quote:
Originally Posted by lars_bergquist
Don't worry about '5cm' or '50mm'. Both are untrue. Ever since the first Leitz Anastigmat of 1925, Leitz/Leica Standard lenses have been designed for a focal length of 52mm or a little less – but definitely more than 50mm!
The old man from the Age of the 3.5 Elmar
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Leica tell you the actual measured focal length on the barrel of modern lenses. The figures at right angles to the main distance scale show the exact focal length.