Hi All,

something went wrong when I took this image. You can see the vertical "lines".

It was approx. the 30th shot of a 36 roll. There are one or two images before and after with similar issues.
Can it be the film? The development?
Or can it be the exposure? I haven't used any hood, I used some filter, I don't remember orange or red one. Probably a polar filter was also attached, but I'm not sure.

Thanks for any ideas.