Comment by jdnier

It pains me to see him unwrapping paper-backed rolls of film in room light, then using a strobe to document the appearance of the the roll (before developing). The fogging you see at the top and bottom edges of some rolls is from light leaking around the edges of loosely-rolled spools; it happens even with modern 120 roll film. There's a good chance he's fogging some of the rolls due to his handling.