I've just started enlarging 4x5 negatives, and to my dismay I'm finding that many of my negs have severe dust contamination. Blemishes that did not show up in contact printing them are now very apparent and irritating.
One thing that I don't understand is that I usually don't have this problem with roll film, which is odd, because their negative area is much smaller. I store all my negs in PrintFile sheets in acid free binders in a humidity controlled location.
1. How do you dry sheets?
2. How do you store them?
3. How do you handle them?
My own answers:
1. I hang them up from clothes pins in a room where the air stands still at all times (same room I hang my roll film).
2. In PrintFile sleeves.
3. With white lint free gloves, I use a camel hair brush and dry compressed air to dust them off before printing, same as my roll film negs.
I don't understand why I'm having this problem. Do I need to work with sheets differently than I work with roll film?