Hi all,

Just checking in with regards to developing times with PMK across 35mm roll and sheet film formats for Ilford HP5+.

I've processed thousands of sheets of 8x10" HP5+ in PMK using a Jobo expert tank (exposed at EI200, souped @21deg. C., 38RPM, 13mins) to excellent results.

Long story short, I'm lining up a project where I will shoot a mix of 8x10" and 35mm roll film and want to check if the times other people are using are the same for both formats, or if the 35mm requires a different time? I ask this because I know that the base colour and density is quite different with 35mm, which some suggest necessitates different treatment – but seem to suggest so in very vague, non-specific terms.

I will of course run my own tests, but before I do: What's the consensus with those in the know?

Thanks for your help!

Tim