So I've got some old techpan in 4x5 and I was thinking of exposing a few sheets to uniform light, developing to different densities and holding the result in front of my taking lens as different grades of neutral density filters. Is this a totally hare-brained idea? I regularly shoot through Ilford multicontrast filters as replacements for yellow and red filters and am satisfied with the results, so I don't see why shooting through the fine grained techpan shouldn't work. Or...?
Bookmarks