I think I might be missing something fairly elementary but here goes.
I have a Schneider Symmar S 150 mm lens on my Wista 45DX and have out of interest been researching its closest focussing distance.
I appreciate that this depends on the amount of bellows extension. At full extension, there must be a limit to how close to the subject one can get. Is there a way of calculating this or is it achieved only by trial and error?
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