Has anyone seen anything like this? I just developed 2 rolls of 120 delta 3200 in the same tank taken on the same day with the same camera. One of the rolls has this dark wavy line about 1cm wide line running intermittently along the whole length of the roll from one end to the other in an irregular sinusoidal pattern. Is this a film defect or has something else happened. I have never seen anything like this before. I have attached a scan of one end of the roll and a few other frames. You can see where the line starts. It runs right to the other end through all the images ruining the entire roll.