What am I doing wrong?

Discussion in 'Color: Film, Paper, and Chemistry' started by mike donahue, Jul 29, 2011.

  1. mike donahue

    mike donahue Member

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    I've been developing my own color (C-41) for a while now and have never had this problem until recently. I use a Jobo machine with flexicolor developer and champion blix. My negatives (Portra 400) compared to when I got it developed recently at the lab look very different; the lab's have an obvious orange mask whereas mine almost seem to be missing it completely. Only when held up to the light can I see some orange in my negatives. Whenever I try to scan the negatives that I've developed, this is what I get:

    [​IMG]

    Film from the lab scans fine.

    All of the chemistry I'm using is fresh and I haven't changed what I've been doing in my process at all. What could be the problem?
     
  2. zsas

    zsas Member

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    What time, temp, agitation, do you dev at?
     
  3. mike donahue

    mike donahue Member

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    38 degrees Celcius with constant rotation (Jobo machine is set to P). Developer for 3:15, Blix for 4:00 and six 30 second washes. Then I unload the film into stabilizer for about a minutes while I clean the tank, reel, etc.
     
  4. zsas

    zsas Member

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    Do you wash between dev and blix? I believe dev in blix contamination turns the negative too cyan
     
  5. mike donahue

    mike donahue Member

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    No I don't but I never have. I don't understand why that would start affecting it after all this time. Also, the picture I posted is of when I try to scan it using the negative setting in Epson Scan just to clarify. The actual negative is not cyan.
     
  6. Photo Engineer

    Photo Engineer Subscriber

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    Try this:

    Develop as normal.
    Rinse 30" or use a 30" stop of 1% acetic acid
    Fix in the C41 fixer
    Wash as recommended for post fixation
    Stabilize or Final Rinse

    Now, examine the negatives in the light. If the mask is orange like your "good" negatives, then the bleach is at fault. If not, then the developer is at fault. And, BTW, if it is the bleach, the negatives are not spoiled, just prewet, bleach and then fix as normal. But, remember my warnings that some blixes are not film friendly or effective enough.

    PE