HELP! Purple Negatives!

Discussion in 'The Darkroom' started by Prophet, Nov 15, 2003.

  1. Prophet

    Prophet TPF Noob!

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    I have developed two rolls of film and both have come out with a Purple tone to the negative. The first roll wasn't that bad but the second one was very noticable. When I go to print, they come out very grey. This is ticking me off cause this is exactly what was happening when I was in high school. Any thoughts? I am thinking I am not leaving it in the fixer long enough. I am leaving them in for 10 minutes at 68 degrees. All my chemicals are pretty much spot on at 68 degrees. HELP!

    -Jeremy-
     
  2. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    I think it's the fixer.

    Either it's weak, or you're not agitating enough. The good news is that you can re-fix your purple negs. Try it again and make sure that you are mixing it according to the manufacturer's instructions. Get a bottle of hypo-check and use it to test for exhausted fixer.

    Take the bit of film leader that you cut off to put it on to the reel and dip it halfway in the fixer. Time how long it takes to make the submerged half clear. Double that time and you have your proper fixing time.

    Sometimes Kodak film just stays a bit purple, but it shouldn't effect your printing.
     
  3. Prophet

    Prophet TPF Noob!

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    I developed my third roll on saturday. After 13 minutes of fixing (normal powder kodak fixer) I looked at the film and it still had a purple hugh to it. I then rinsed for 1 minute and it still had that tone to it. I then used hypo-clear and it took most of the hugh away, but it still had a slight purple hugh to it.

    When printing how can you get around the hugh, because (being the beginner I am) I would think that the hugh would cause the print to be grey.

    -Jeremy-
     
  4. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    I would have to see your negs to assess.

    I too get some purple tint on Kodak film, but it's not enough to noticably affect the printing, and it tends to fade with time.

    If you have major purple left it means there is still gunk that should be washed away by the fixer. This gunk is increasing the density of your neg, and would affect printing. If re-fixing doesn't work, then the film is probably old, or heat or x-ray damaged.

    Your problem is not uncommon. I've had it happen to me, and talked to lots of others who've had it too.

    Are you using Kodak Tmax films? Tmax 100 and 400 are most prone to this problem, but I've had it happen with Tri-X too. Usually I would think that 10 min of fixing should be good for Tmax films. Kodak is sometimes called the "purple monster".

    If you keep having the problem then you might try using a rapid fixer or increasing your agitation during fixing. If this doesn't work then try out Ilford films.
     
  5. oriecat

    oriecat work in progress

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    Also, try another brand of film and see if it still happens.
     
  6. photoman

    photoman TPF Noob!

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    I am also having trouble with purple negatives.
    I developed T-max 400 and 100 in T-Max developer for the recommened time and fixed them in Kodafix liquid fixer (usually around 8 min at around 70 degrees), and then use the powder hypo and usually hypo for 1.5-2 min at 70 degrees.
    I havent had a problem with the purple cast except on iso 100 which has a very slight cast to it.

    The problem I have come across is that I want to start to try Tri-x or TX 400. But when i use kodaks suggested time for fixing (2-4 mins) (it seems very short) and then hypo, and wash It comes back very pink or purple.

    1) The question is do i just need to re hypo for longer?

    2) Use longer Fixing time?

    3) If so what times do you use for fixing and hypo?

    4) Will I lose highlights and will they wash out the negatives?

    5) Which bath washes out the red stain?

    6) Do all kodaks films use the red dye in the film? (Any kodak film I buy will have this red stain)

    Thank you for your time
    Its a relativly long post :D
     
  7. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    Instead of using manufacturer's recommended times do a clearing test. Take an undeveloped sample of the film (the film leader snipet from 35mm rolls works great), and dip it halfway into the fixer. Time how long it takes to clear, and use double this time when fixing the rolls.
     
  8. Prophet

    Prophet TPF Noob!

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    Photoman,

    I would definately fix for atleast 10 minutes. The book I have been going by says to fix for 10 minutes. My last roll of 400 Tmax I fixed for 13 minutes and it looked much better. I just printed a few of my shots and they came out pretty good. I would try fixing for alteast 10 and maybe even stretch it to 15. I was told by the owner of my local photo shop that fixing won't bleach out the negs unless you fix for huge amounts of time, like an hour. I would also recommend using the hypo clear. The hypo clear really helped. I used it on my 3rd roll and it helped. Give it a shot.

    -Jeremy-
     
  9. photoman

    photoman TPF Noob!

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    Do you know if the hypo clear with time longer than 2:00 mins will wash out the negatives?

    I do use hypo clear on the negatives for a little under 2:00 mins at around 70 degrees F.

    Thanks for the info :wink:
     
  10. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    Hypo clear isn't any more dangerous for your film than water. Eventually, if you soak your film long enough, the emulsion could swell or become damaged, but I think that would require very long times.

    I always use hypo clear on film and fiber paper. Mostly because all the manufacturers recommend it. It significantly reduces washing times.
     
  11. Tyjax

    Tyjax TPF Noob!

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    Possibly unrelated. But I just developed my first roll of Agfapan 100 and it tinted my developer purple!?! But the negatives were great. Scared teh bejeebers out of my when I poured the developer back in the bottle and it was purple.
     
  12. Prophet

    Prophet TPF Noob!

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    I was getting the same thing on my first and third roll but not on the second so much. That must be the dies and some of the emulsion (i think?) being removed and washed away. I was actually getting purple and a tan color. I don't remember either happening when I first started doing this 10 years ago.

    -Jeremy-
     

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