Hi everyone.

Here's something interesting that was discovered after separately developing
two rolls of 35mm T-Max film: a type of apparent exposure outside of the
sprocket holes, starting at the beginning of the roll and tapering off in
intensity and width, disappearing completely after about frame 10. They are
about 2-3/4" (7cm) apart from center to center, a length of approximately
1-3/4" (45mm) and a width (from edge of film toward sprocket holes of 1/4"
(6.5mm) at frame 0.

Does anyone have suggestions for why this appeared? If it were a light leak
(both rolls exposed in the same camera, a Canon A-1 with light seals intact
and in good condition), I would think the anomaly would exhibit itself
throughout the entire roll, not stopping 1/3 of the way through.

The lack of unwanted exposure throughout the width of the film (i.e. on the
edges only) fails to support a hypothesis whereby a source of radiation was
in proximity to the film.

Any help in solving this mystery would be greatly appreciated. Note that the
use of Excedrin, while instrumental in relieving me of the headache (caused
by too much thought on the matter), has done nothing to solve the quandary
at hand.