View Full Version : Measure from film plane or lens?
I want to test some lenses for focus accuracy at 1m but I need to ask...do I measure from the film plane, front of the lens, or somewhere else? :o
Measure from the film plane.
Don't know about your ZM, but most cameras (used to) have a datum mark ( for the film plain ).
The standard mark is a circle with a line through and, on the M6, it is under the wind lever.
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