This question may be asked before, but can't find the answer.
I'm trying to find my personal film speed E.I. for fomapan 200.
I have an Gandolfi 8x10 and an Nikkor-T ED 600 mm.
If I should focus at infinity, (as Ansel Adam writes) I'll have to place my grey card "in the neighbor's garden" and it will appears as a stamp on the film.
If I focus at infinity an fill the film whit the gray card, it's impossible to measure any different with the density meter.
Any suggestion?
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