Hi,
If I have a 4x5 camera that has only 190mm of bellows extension with lens boards upright (and they can't be tilted), which lens gives the narrowest field of view possible for a portrait? Is there a calculator for such things ? I have searched but I think my search terms are too generic. In scanning the pdf docs listing lenses for 4x5, my guess is the Xenar 150mm because it has a 60 degree angle of view. I wonder if I could get a head 'n' shoulders portrait with that lens in only 190mm ?
It would be good to know roughly what image size to expect from a lens before buying it !
Another option might be a extension back by Ebony (?) to take the film plane back a certain amount ... ? This would increase the effective extension of the lens ...
I am sure that as the lens moves from infinity focus, the extension amount is not linearly related to the focus distance from the camera ... but what is the relationship ?
Thanks in advance,
Steve
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