Dear Members
Thank you very much for any help you might give me. Here are the facts
1) I have shot 2 packages of (non expired) 4x5 Ilford Hp5 Plus with a Tachihara camera, Nikkor lenses (135mm and 210mm) and plastic filmholders (Fidelity etc);
2) I have developed the negatives using the following: Xtol (Dilution 1:1), plain water (no acidic stop bath) and Kodak Fixer (same combination I have used in developing Hp5 Plus 120 roll film without any noticeable development issue);
3) I developed the negatives one by one using 3 separate trays (developer, water and fixer) by rocking the developer tray approximately 5 seconds every minute after an initial agitation of approximately 50 seconds (similar agitation pattern is used with the fixer tray)
4) Some (but not all) negatives appear to have random stripes of lower density (which appear lighter in the negative and darker in the positive) in high density areas (particular the sky). See attachment.
5) I cannot track the problem to its cause. I have googled a bit before posting but to not avail. So far my best guess is static electricity from removal or insertion of the dark slide but I am all but sure about this.
Any help would be immensely appreciated as this problem proves to be very frustrating!
Kind Regards
Simone
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