My own attempts at developing c41 weren't going very well so I decided to send the last batch out again. Am I expecting too much or is there some other issue here? Looks like some form of uneven development to me. I applied a very heavy curves adjustment layer to make the marks more visible. But I do feel it can be subtly spotted in blue skies. The marks also show up more the more I edit the photo. I can even see the marks on the straight conversion with no editing.




On Portra 400 scanned in with an Epson 4990 and converted from raw positive with colorperfect.

I am guessing I am expecting too much. But on another photo with just some smooth blue sky I could see a hint of the same marks and I felt I needed to cover it up with a gradient overlay masked in. I am not editing to the point of the second image but, to me, once the marks are visible, on any level, it's no good.