Cinestill DF96 weird grain issue.

Discussion in 'The Darkroom' started by darry85, Nov 6, 2018 at 7:35 PM.

  1. darry85

    darry85 TPF Noob!

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    So, I just got the new Cinestill DF96 monobath to try out and developed a test roll of tri x and everything came out good. I pushed the 400 speed film to 1600 using their instructions of 90 degrees at 6 minutes.

    I scanned my negatives in and there's a weird grain pattern I've never seen on black and white images before. I'm not sure if it's my scanner or the monobath. I looked at other people's DF96 images and they didn't have this issue. I scanned the negs twice with the same result.

    [​IMG]

    I hope you can see it. Is that normal? It doesn't look like normal grain, but little hash marks or something. I'm really new at this.

    Thanks..


     
  2. Derrel

    Derrel Mr. Rain Cloud

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    It looks like reticulation...not grain, but reticulation, which can be/is caused by temperature extremes. A good example is getting the film warm/hot in the post-development rinse cycle...this can make the emulsion very soft and pliable....then, when cool/cold water is introduced, BOOM, the warm,swelled emulsion shrinks/contracts, and makes the reticulation pattern. Reticulation can ALSO be caused, I have recently learned from TPF and @webestang64, from extreme temperature swings, such as when film is left in a car glove box, or in a car in temperature extremes, for a somewhat long time frame.
     
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  3. john.margetts

    john.margetts No longer a newbie, moving up!

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    I second Derrel and think that is reticulation. Have I read your post right and you developed at 90°? Even with Fahrenheit that is hot. If that was followed by cold rinse water then reticulation is going g to be very likely. You need all your liquids, including rinse water, to be close in temperature.

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  4. jcdeboever

    jcdeboever TPF Supporters Supporting Member

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    It is reticulation as Derrel pointed out. The causes are as he explained. I recently experienced that as well in B & W film that was poorly kept but properly developed. I recently did a test roll of fresh film and purposely developed it in a poor manner as Derrel described, hot and cold temps, it did this exact thing. So the two causes are verified.

    Now, you are using a relatively new monobath product, that could also be an issue. I have read somewhere that the monobath and TriX are not a good combo but I can't find it, maybe it was a YouTube video on the product. Can't recall but I know it because I shoot mainly TriX and when I heard or read that, I decided to skip on trying the product.
     
    Last edited: Nov 7, 2018 at 6:15 AM
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  5. webestang64

    webestang64 Been spending a lot of time on here!

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    Side note.............Your rinse water and Photo-Flo must be at 90 degrees as well.
     
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  6. darry85

    darry85 TPF Noob!

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    Thanks everyone. I was more careful with my rinsing temps and i have a roll drying so we shall see.
     
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