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Thread: Uneven Development

  1. #1

    Join Date
    Jan 2016
    Posts
    7

    Uneven Development

    Hi,

    I just tried to develop my own B&W photo but it seems as though it was developed unevenly with a dark streak in the middle. After some googling and reading threads, I think it may be uneven agitation. I am attaching a copy of the negative for help. Thanks so much.
    Attached Thumbnails Attached Thumbnails First Try at B&W-2.jpg  

  2. #2

    Join Date
    Nov 2003
    Posts
    135

    Re: Uneven Development

    Quote Originally Posted by rbudhu View Post
    Hi,

    I just tried to develop my own B&W photo but it seems as though it was developed unevenly with a dark streak in the middle. After some googling and reading threads, I think it may be uneven agitation. I am attaching a copy of the negative for help. Thanks so much.
    Can you describe how the film was developed, tray, tank or deep tank with hangers?

  3. #3
    David Schaller
    Join Date
    Mar 2002
    Location
    Williamstown, MA
    Posts
    506

    Re: Uneven Development

    Yep, that's uneven development. You might want to tell us your procedure, step by step. How are you developing?

  4. #4

    Join Date
    Aug 2015
    Location
    Yorkshire, England.
    Posts
    15

    Re: Uneven Development

    A very sharp change half-way along the picture: as if the left-hand side wasn't in the developer for the whole time.

  5. #5

    Join Date
    Jan 2016
    Posts
    7

    Re: Uneven Development

    Thanks for the replies. I am using a Paterson tank (two 4x5 sheets) with 500ml HC-110 (484ml water and 16ml concentrate), 500ml Ilford Rapid Fixer (4+1 dillution). I used the mass. dev. app. with 6 min developer, 1 min stop bath, 5 min fixer, and 10 min wash.

  6. #6

    Join Date
    Sep 2014
    Location
    North Dakota
    Posts
    671

    Re: Uneven Development

    You say TWO sheets of film. Are both showing this density difference?

    How much liquid in the tank to fill it completely?
    I tend to procrastinate on stuff. One of these days I'll do something about it.

  7. #7

    Join Date
    Jan 2016
    Posts
    7

    Re: Uneven Development

    Yes, both are similar. I'm not sure. I am using the Paterson Super System 4 Film Developing Tank (Multi-Reel 3) so I'm not sure how much liquid would be needed to completely fill it.

  8. #8
    Huub
    Join Date
    Dec 2013
    Location
    Netherlands
    Posts
    108

    Re: Uneven Development

    You need at least 1 L of fluid for that tank, which explains why about half of the negative is relatively well developed and the other half isn't. But there seems more issues to the negatives. Did you use the MOD54 insert for this tank?

  9. #9

    Join Date
    Aug 2015
    Location
    Yorkshire, England.
    Posts
    15

    Re: Uneven Development

    If I recall correctly, Paterson tanks use 300ml to cover a single 35mm film, so a three-reel tank must hold at least 900 ml. Each of those reels is (I guess) 40 mm tall. I haven't used a Paterson tank for a while, and never for sheet film. How are you holding the film in the tank, and which way round? If it sits with the four-inch side vertical, I guess you need about (4 inch*25 mm/inch) * 300 ml / 40 mm = 750 ml, as long as the film is at the bottom and can't stray upwards. If the 5-inch side is vertical, that's about 940 ml.

    (Aha! I'd forgotten the MOD45)
    Last edited by Dustin McAmera; 16-Dec-2016 at 08:09. Reason: Someone else posted first

  10. #10

    Join Date
    Jan 2016
    Posts
    7

    Re: Uneven Development

    Yes, also used a Mod45! I appreciate all the help!

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