FWIW it looks more like a fingerprint, on the right hald of the image only, than a scratch, but then you've looked at the film itself.
I recall a similar scratching problem being discussed several years ago, but I don't recall the solution. I think the camera is worth fixing, but then talk to the repair pro - he/she should have a better idea. Maris Amy Hughes wrote: > I have a zx-10 that is scratching film. Here's a sample... > > http://www.amyhughes.org/photography/anyaprecious/precious010.jpg > > I at first thought it was the photolab and that the problem was in > printing, and since the prints were only to be used as proofs I didn't > worry about it. After the second or third roll I changed cameras and > the problem went away. Took a look at the film for the botched prints > and sure enough, the film is scratched. Always a length-wise scratch, > as in the sample. > > I can see nothing in the camera that'd do this. What might cause this, > and is there an easy fix? This camera's been on the shelf a few years. > Time to fix it or chuck it.

