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  1. #11
    Ole
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    Quote Originally Posted by philldresser
    With 24 hours a day of darkness in Norway I thought you had plenty of time to sleep
    I'm well south of the Arctic Circle, so I only get about 20 hours of darkness. And I need that sleep to catch up, as the summer has 20 hours of daylight
    -- Ole Tjugen, Luddite Elitist
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  2. #12

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    [quote="Ole"]Tried stand development for the first time today...

    I had some pre-mixed FX-2 sitting around from developing this weekend's worth of 5x7" film. I did half in Pyrocat-HD, half in FX-2 to see what the difference is.


    Just curious to know what difference you found, if any, between the negatives developed in FX-2 and Pyrocat-HD?


    Sandy

  3. #13
    Ole
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    Quote Originally Posted by sanking
    Just curious to know what difference you found, if any, between the negatives developed in FX-2 and Pyrocat-HD?
    A quick look at the negatives shows that FX-2 seems to give slightly better speed (more shadow separation), but poorer highlight separation. I will make some prints tomorrow, as the stain of Pyrocat-HD makes it very difficult to assess negatives visually. Both sets were developed by inspection to about the same visual density.

    If the prints confirm these observations, I'll turn to FX-2 for "small" negatives and poor light, using Pyrocat-HD for larger negatives to be contact printed. The FX-2 (or as close to it as I could get) seems to be a very good choise for stand development, at least...

    I followed the recipe in "The Film Development Cookbook" with the following modifications: Replaced crystalline potassium carbonate with anhydrous, reducing the amount by 20% as well as replacing 10% of the sodium sulfite by sodium bisulfite. This was because I don't have crystalline K2CO3, which is said to contain some bicarbonate giving a buffering effect. Using a bisulfite/sulfite mix gives the same effect.
    -- Ole Tjugen, Luddite Elitist
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  4. #14
    Silverpixels5's Avatar
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    In the tests that I've run with Pyrocat HD and stand development, I've seen about a 1/3 stop loss in speed. I get full film speed with standard development, but find that the shadows are lacking for stand dev when rated at the manufacturers speed.
    RL Foley

  5. #15
    Ole
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    Quote Originally Posted by Silverpixels5
    In the tests that I've run with Pyrocat HD and stand development, I've seen about a 1/3 stop loss in speed. I get full film speed with standard development, but find that the shadows are lacking for stand dev when rated at the manufacturers speed.
    I can't really say anything about that, as I haven't tried Pyrocat-HD with stand development yet. The films I did with FX-2 seems to indicate that this may be so in that case too, but the films were different (FP4+ and TMX vs. PL100), and the camera/lens were different too (shutter sped may be different). FX-2 with normal development seems to give a slight speed increase (about 2/3 to 1 stop), which is what I'd expect.
    -- Ole Tjugen, Luddite Elitist
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  6. #16

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    Quote Originally Posted by Ole
    Quote Originally Posted by Silverpixels5
    In the tests that I've run with Pyrocat HD and stand development, I've seen about a 1/3 stop loss in speed. I get full film speed with standard development, but find that the shadows are lacking for stand dev when rated at the manufacturers speed.
    I can't really say anything about that, as I haven't tried Pyrocat-HD with stand development yet. The films I did with FX-2 seems to indicate that this may be so in that case too, but the films were different (FP4+ and TMX vs. PL100), and the camera/lens were different too (shutter sped may be different). FX-2 with normal development seems to give a slight speed increase (about 2/3 to 1 stop), which is what I'd expect.
    My belief is that if there is a loss of film speed with stand development with either FX-2 or Pyrocat-HD the reason is development time was not long enough for the dilution used. In this case it is merely a question of getting the right combination of dilution and time of development. So if you are getting reduced film speed with eithe of these developers I would recommend that you either make the dilution slightly more energetic or increase development times.

    The more critical issue is evenenss of development. That is the thing I am always most concerned about with stand development.

  7. #17
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    Perhaps I'll try a longer time then. I have yet to encounter any fogging or infectious dev with one hour of development, so we'll see what a longer time yields.
    RL Foley

  8. #18
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    I've just done some Delta 3200 (120) in PCAT this way-40 mins in paterson tank-negs look vg (just a few marks on one side)-rated at 1600.I agitated for 1 min at the beginning and 1 min halfway through. Should you just do one roll at a time in the same tank?
    "He took to writing poetry and visiting the elves: and though many shook their heads and touched their foreheads and said 'Poor old Baggins!' and though few believed any of his tales, he remained very happy till the end of his days, and those were extraordinarily long "- JRR Tolkien, ' The Hobbit '.

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