I just had 16mm film printed for the first time, and noticed a strange anomaly in the print. I'm wondering if you guys could help me figure out what it is... Here's a picture of the print, taken through a loupe. The two thin white lines are obviously scratches in the negative, but I'm very confused about what the more diffuse line to their right is. I checked the negative, and it's nowhere to be found- it appears only in the positive.
When projected, it doesn't look perfectly straight- more wavy and with varying thickness.
Sincerely appreciate any ideas you might have Thanks in advance!