Hey Derek, I read before that you use Epson scanners. I have an Epson v550 and when I scan my 35mm film I get at least two strange, purple or green lines on several of the frames. They are perfectly straight lines. I don’t know if it’s the camera scratching the film, or if it’s the scanner. I’m using a Lomo lca+ and a Holga 135. Have you ever had that? Thanks for any help you can give.

Well its likely the scanner, however the want to find out is to move the negative around and scan again. If its in the exact same spot, then its the scanner. When I say move it, you will need to move it significantly. ie. Flip it, or put it in backwards. If you see the line in the same spot on the image its the negative. 

If its your scanner, Id sometimes get yellow lines down my images, Id simply move the negative slightly in the scanner. I think its something to do with the placement of the negative holder and the scanner. 

Let me know if that help. 

Derek