Try this idea. When the lens is further from the film, the area the image
covers is greater i.e. at twice the distance the area is four times as
big. Four times as big means each area gets 1/4 as much light. One stop
change allows 1/2 as much light, so 1/2 X 1/2 or two stops means 1/4 as
much light. Compensate by opening up two stops. Clear as mud?
Gregg<
Ah, okay, now I've got it.
Could you just repeat part of it? Starting with "Try this idea"? ;)
Lex
Photographer, painter, writer, delirious grandpa, (idiot+savant)-(the savant
part)
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