Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,689   Posts: 1,548,802   Online: 1124
      
Page 1 of 2 12 LastLast
Results 1 to 10 of 15
  1. #1

    Join Date
    Jul 2003
    Location
    Ireland
    Posts
    5
    I have encountered Strange Blotchy Marks along one edge of My 120 Negs.
    Not happening on all of my films though.
    Developer is Rodinal 1 to 50,
    Paterson Tank 500ml of Chemistry.
    30 inversions for first minute, 3 every minute thereafter.
    Water for Stop Bath.
    Fix 6 min's in Hypam.
    Wash and Dry as Normal.
    Film is HP5 and FP4.
    Have processed Hundred's of Film's this one has me slightly puzzled.
    Could I be over Agitating ???

    Any Help Appreciated.
    Camera is Pentax 67.

  2. #2

    Join Date
    Sep 2002
    Posts
    747
    Some people claim it's something to do with the patterson reels. I don't know I never saw it when I used patterson reels. I used to invert for 10seconds every minute. I also used a fairly dilute developer [1:3 d23] and that may have been a factor. Maybe somebody can explain what it is with the patterson reels.

  3. #3
    glbeas's Avatar
    Join Date
    Sep 2002
    Location
    Roswell, Ga. USA
    Shooter
    Multi Format
    Posts
    3,307
    Images
    109
    How about a better description of the marks, color, diffuse or hard edged, etc?
    You can get marks on one edge, upper side in tank, from fixer being too low and leaving unfixed areas or having trapped air bubbles cause the same.
    Gary Beasley

  4. #4
    Ed Sukach's Avatar
    Join Date
    Nov 2002
    Location
    Ipswich, Massachusetts, USA
    Shooter
    Medium Format
    Posts
    4,520
    Images
    26
    How deep into the frame are they?
    I've used both Paterson and JOBO reels and have never experienced anything like that on *one edge* only. I'd suspect the volume of chemicals.
    One thought - is there a possibility of left over wetting agent foaming and causing uneven devolpment/ fixing? Which edge is it - the lower or upper as the tank lies when not being agitated?
    Carpe erratum!!

    Ed Sukach, FFP.

  5. #5

    Join Date
    Jul 2003
    Location
    Ireland
    Posts
    5
    I'm going to check all of my recent film's.
    I will get to the bottom of this and report back at a later stage.
    It might actually benefit soeone else some day.
    I think the cause might be foaming of the developer which I have noticed during agitation.Anyone Agree ????

  6. #6
    Black Dog's Avatar
    Join Date
    Jul 2003
    Location
    I've been everywhere ooooohhh yeaahhhh still I'm standing tall.
    Shooter
    Multi Format
    Posts
    2,653
    I've had similar problems -I usually use PMK or another staining dev. Using fresh reels usually helps and make sure you rinse everything after use.

    BD

  7. #7

    Join Date
    Jul 2003
    Location
    Ireland
    Posts
    5
    Just posted a picture in the non Gallery Section.
    Showing the Problem.

    Heading Negative Problem's.

  8. #8
    bjorke's Avatar
    Join Date
    Aug 2003
    Location
    SF & Surrounding Planet
    Shooter
    Medium Format
    Posts
    2,032
    Images
    20
    That's what they look like, though as Les points out they'd be unusual on only one side.

    If you are using plastic reels, are you agitating the tank via inversion, or by twisting the little handle? The twist handle has caused surge marks for me in the past, I now use inversion exclusively and have never had a problem since.

    Cheers,

    "What Would Zeus Do?"
    KBPhotoRantPhotoPermitAPUG flickr Robot

  9. #9

    Join Date
    Jul 2003
    Location
    Ireland
    Posts
    5
    Paterson Tank 500ml of Chemistery as reccomended by Paterson.
    I have even made a small plastic spacer for the centre column in the tank to make sure th Reel cannot slide up the column during Processing.
    Agitation by Inversion method.
    This problem has happened with Tri X Hp5 and Fp4 all in 120 doesn't seem to happen on 35mm.
    It is happening with different developers Rodinal and HC 110.
    Sometimes it is hardly visible on the Negative but shows up on the final Print.
    I'm going to try mixing a larger volume of Chemistery maybe 600ml with less vigorous agitation and even be more thorough in washing the tank afterwards than I am already, although I think my tank washing is not at fault.

  10. #10

    Join Date
    Sep 2002
    Shooter
    Multi Format
    Posts
    1,966
    Images
    1
    I was getting similar marks recently so I switched from inversion agitation to twirling and adding an extra 50ml (Paterson System 4 tank) and they've disappeared...

    Since this contradicts some of the above advice, I think you just need to try a few different things to find one that works for you.

Page 1 of 2 12 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin