Wish to add my too cents in the form of a Negative scanned , that was taken by me last sunday at winchester, Ma. shot with a Bausch & Lomb - Planatograph F-8 4x5 size which turns out to be about 195mm,wi9th Fp-4 film at F32 at 9 seconds and no adjustment made used a 3x red filter again, developed in ID-11 with 1-3 dilution for 9-1/2 Minutes, I think there is a place still for these lenses : Lauren