Hi,
I have access to a friends 8 x 10 and a Goerz Dagor 305mm 6.8 and am looking to do some close up portraits with it. As I understand it, to focus at infinity, the lens is 305mm away from the film plane. For a close up portrait, just wondering how far the bellows is likely to be away from the film plane?
Would about 450mm be about right?
Do I need to factor in any bellows light loss when working out an exposure?
I have attached a reference to show how close I am talking about.
Thanks in advance!
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