I can see them on the negative, and it is not dirt stuck to the film. It seems to be something about the process. It never happened to me in the first rolls I processed. I came back to processing with the same batch of D-76, after a year and a half hiatus. So I saw these circles on the image I am posting, but then I saw again a roll I processed some days ago (also after the hiatus), and I can see some circles on certain images, but because they are more subtle I didn't notice them before. The image I am posting is the one where there are more circles and they are more noticeable. So, in this thread How to know if mixed D-76 has expired? , when I concluded that the processing was successful, now I could say that yes, the images are well developed, but there are these circles which shouldn’t be there and which weren’t present on the negatives processed with more fresh chemicals. What are they? Is the problem the developer or the fixer? Or the stop bath or something else? Also, in the roll of the image I’m posting, there are some marks in the borders of the film. Look at one of them in the third image. I think I saw them on a previous roll, processed with fresh chemicals. But they are more numerous in this roll. Probably they have nothing to do with the circles… but what are they?