Page 1 of 2 12 LastLast
Results 1 to 10 of 15

Thread: Problem with stains on negatives

  1. #1

    Join Date
    Oct 2014
    Posts
    125

    Problem with stains on negatives

    Im having this problem (see on the picture) now since a while and cant get rid of it.
    it don't always happen.

    i use a CPA2 with LIFT and the Jobo drums with Reels 2500

    I used to use Rodinal 1+25
    but now i use XTOL 1:1

    Im loading the film with the emulsion side in.
    I use prewash
    i use only destiled water.

    what could the cause of this stains be
    Click image for larger version. 

Name:	1.jpg 
Views:	56 
Size:	33.3 KB 
ID:	176677Click image for larger version. 

Name:	2.jpg 
Views:	55 
Size:	24.0 KB 
ID:	176678

    thanks alot for your help guys!
    Last edited by Jbuck; 3-Apr-2018 at 19:05.

  2. #2
    jim_jm's Avatar
    Join Date
    Jan 2013
    Location
    San Diego, CA
    Posts
    63

    Re: Problem with stains on negatives

    Does the stain on the negative have any color to it? I occasionally have a similar thing happen with Arista EDU Ultra, developed in tubes either with D76 or HC110.

    In my case it's due to the non-emulsion side touching the inside of the tube, and the anti-halation layer doesn't fully clear in spots. The stains show up blue in the negs after fixing, but several minutes in Hypo-clear gets rid of them

  3. #3

    Join Date
    May 2006
    Location
    north of the 49th
    Posts
    1,147

    Re: Problem with stains on negatives

    almost looks like drying marks and they look very similar. do you know how the sheets were oriented on the reel ? if you did six sheets, do any others show this artifact ?
    notch codes ? I only use one film...

  4. #4

    Join Date
    Oct 2014
    Posts
    125

    Re: Problem with stains on negatives

    Quote Originally Posted by Fred L View Post
    almost looks like drying marks and they look very similar. do you know how the sheets were oriented on the reel ? if you did six sheets, do any others show this artifact ?
    This time i did only 2 sheets, and dont remember the orientation

  5. #5

    Re: Problem with stains on negatives

    What volume developer did you use? And did you put in the two v-shaped clips to hold the film in place? These serve to even out the flow pattern, looks to me that the artifacts could be due to uneven development...
    www.yansfotos.de

  6. #6

    Join Date
    Oct 2014
    Posts
    125

    Re: Problem with stains on negatives

    Quote Originally Posted by Yansfotos1 View Post
    What volume developer did you use? And did you put in the two v-shaped clips to hold the film in place? These serve to even out the flow pattern, looks to me that the artifacts could be due to uneven development...
    It was 300 mil of chemistry.. should i add 400?

  7. #7

    Join Date
    Jul 2016
    Posts
    4,565

    Re: Problem with stains on negatives

    a) Prewash, specially if it's short, can lead to uneven development, see page 3, http://largeformatfilm.com/FP4-plus.pdf, as it removes in emulsion surfactants that can be important. If you prewash add water just before rotation starts and wash time enough.

    b) Fix again with fresh fixer, and wash. Your posted image is monochrome, but if stain is in the emulsion side and it's slightly brown then your fixing was poor.

  8. #8

    Join Date
    Oct 2014
    Posts
    125

    Re: Problem with stains on negatives

    thanks, i try this.

    btw. if i decide to make tests.. is it somehow relevant if i develop 2 sheets or 4 or 6 in the drum per test?
    since i would like to do the tests with 1 or 2 sheets per test-development in the jobo. so i waist less film.

  9. #9
    jp's Avatar
    Join Date
    May 2009
    Location
    Maine
    Posts
    5,340

    Re: Problem with stains on negatives

    Just fix and rewash it in a tray just for testing. If it clears up, you have a fixing issue and maybe need more fixer. If it's still there, it's probably something else such as developing options.

  10. #10

    Join Date
    Jun 2014
    Posts
    1,738

    Re: Problem with stains on negatives

    Unless you're using a developer at its point of depletion (which you're not doing), it doesn't matter. So go ahead and do one sheet at a time.

    Btw, I use a 2500 tank and the accompanying reel without any clips or extras and I get even development if I use the jobo at its low speed setting (something like 30-40rpm I think). But I never use xtol, so my experience is only marginally relevant to your situation. This doesn't look like and fixer issue to me btw, but it doesn't hurt to try fresh fixer.

Similar Threads

  1. Help work me through a problem with out of focus negatives
    By mbuonocore in forum Cameras & Camera Accessories
    Replies: 38
    Last Post: 4-Oct-2015, 18:03
  2. Water stains on C-41
    By Christopher Barrett in forum Darkroom: Film, Processing & Printing
    Replies: 10
    Last Post: 3-Nov-2014, 13:29
  3. Problem scanning b/w negatives using betterscanning film holder.
    By Leonard Evens in forum Digital Processing
    Replies: 5
    Last Post: 23-Apr-2012, 23:15
  4. Negative stains
    By Ramiro Elena in forum Darkroom: Film, Processing & Printing
    Replies: 12
    Last Post: 14-Mar-2010, 04:09
  5. HELP with stains on prints
    By jonathan smith in forum Darkroom: Film, Processing & Printing
    Replies: 4
    Last Post: 28-Jul-2006, 18:59

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •