Hi everyone.\n\nHere's something interesting that was discovered after separately developing\ntwo rolls of 35mm T-Max film: a type of apparent exposure outside of the\nsprocket holes, starting at the beginning of the roll and tapering off in\nintensity and width, disappearing completely after about frame 10. They are\nabout 2-3/4" (7cm) apart from center to center, a length of approximately\n1-3/4" (45mm) and a width (from edge of film toward sprocket holes of 1/4"\n(6.5mm) at frame 0.\n\nDoes anyone have suggestions for why this appeared? If it were a light leak\n(both rolls exposed in the same camera, a Canon A-1 with light seals intact\nand in good condition), I would think the anomaly would exhibit itself\nthroughout the entire roll, not stopping 1/3 of the way through.\n\nThe lack of unwanted exposure throughout the width of the film (i.e. on the\nedges only) fails to support a hypothesis whereby a source of radiation was\nin proximity to the film.\n\nAny help in solving this mystery would be greatly appreciated. Note that the\nuse of Excedrin, while instrumental in relieving me of the headache (caused\nby too much thought on the matter), has done nothing to solve the quandary\nat hand.