Hi all,
I recently purchased an sp445 developing tank. Have been processing film successfully, however recently I have been getting some strong water marks on the non emulsion (shiny) side of the film. They directly line up with the plastic markings of the film holders. They don't seem to be appearing on my scans, however I am still keen to do away with the problem.
I have been racking my brain to think how they could occur as I successfully processed my film without them previously. I then realised that all my previous film was Tmax 100 and the marks are appearing now on HP5. Is it possible that different film stocks are more susceptible to these issues than others?
Some photos attached.
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