Roger Cole
Subscriber
It's true. I vacuum them regularly and keep them in ziplocs except for when they're in the camera or being loaded/unloaded. Compressed air and brushes just move the dust around, use the vacuum. Keep your camera interior spotlessly clean too, vacuum there too and be careful of the bellows. Pulling a darkslide can generate static electric charges and all the dust in the camera will stick to your film.
When loading, I slide the darkslide back about two inches and insert the sheet while holding that side down and the holder over my head.
For 8x10 I put together a set of the old Kodak / Folmer & Schwing wooden holders with disassembleable lightraps - it's amazing how much crud can accumulate in a trap that big.
I wasn't questioning your honesty, BTW, just amazed.
Drew, I can't recall EVER having a medium format shot ruined by dust on the film. I'm lucky if 1/2 my sheet film shots are dust free and I go to relatively heroic measures, but not as much so as you two I guess. My only MF SLR is my M645Pro which should produce less dust than 6x7 just from less film to have dust on, but worse when it happens due to more enlargement. I can't recall ever printing a 645 neg to 16x20 but with today's films I wouldn't hesitate if I have a shot that would work at that size (well, maybe not from my pushed D3200, unless the grain was really part of the effect, but certainly from FP4+ or even Tri-X.) My other MF is a TLR without the mirror and focal plane shutter. I HAVE printed those to 15" square on 16x20 paper without dust. (From Pan F+ - looked great.)