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Thread: Developing HP5+ in PMK, sheets vs. 35mm roll film routine

  1. #1

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    Developing HP5+ in PMK, sheets vs. 35mm roll film routine

    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

  2. #2

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    Re: Developing HP5+ in PMK, sheets vs. 35mm roll film routine

    Since I get a quite dark pine green water after presoaking HP5+ 3, I never skip the presoak. This color of the film might have a proportional bigger impact on the image for 35mm than for larger formats. But I predict no consensus following below.

  3. #3

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    Re: Developing HP5+ in PMK, sheets vs. 35mm roll film routine

    Thanks for the reply, Otto. I suspect you may be right – everyone has their own 'recipe' according to specific needs / workflow.

    I'm not sure how / if the PMK stain will affect the smaller negative in a proportional sense, but that's an interesting question.

    Thanks again and perhaps someone else will chime in!

  4. #4
    bob carnie's Avatar
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    Re: Developing HP5+ in PMK, sheets vs. 35mm roll film routine

    I have never changed my process for PMK when using 8 x10 or 35mm, I pretty much do a pre soak, 7 min dev 1 which I keep for the final stain, 7 min for the second developer, water wash , fix, stain and wash. I am usually using a 400 speed film that is rated at 180 and will only change my times up or down if the original lighting scene warrants it. I have processed like you Tim thousands of runs of PMK, I use a Jobo. if I have a scene with grey backgrounds or a lot of even sky, I will manually agitate off the machine with a inversion and twist for the first 20 seconds or so and then on the machine. I started doing this to avoid flow marks, is suspect it was the water mineral content, so if I am unsure I will use distilled water for the presoak and the devs.

  5. #5

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    Re: Developing HP5+ in PMK, sheets vs. 35mm roll film routine

    Thanks, Bob!
    Awesome info, just what I needed and confirmed what I'd thought / hoped!
    T

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