Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,294   Posts: 1,535,534   Online: 1051
      
Page 1 of 3 123 LastLast
Results 1 to 10 of 22
  1. #1
    Eric Rose's Avatar
    Join Date
    Nov 2002
    Location
    Calgary AB, Canada
    Shooter
    4x5 Format
    Posts
    4,242
    Images
    73
    I am interested in using a technique where you use two different concentrations of developer. One would be normal strenghth and the other very diluted. I understand this technique is certainly not new and is widely used by such photographers as Bruce Barnbaum.

    I don't know however which should go first, normal soup or diluted. And what the concentrations should be. I am trying to extend the tonal range of my prints while still achieving good contrast.

    Any suggestions would be greatly appreciated.

    Eric
    www.ericrose.com
    yourbaddog.com

    "civility is not a sign of weakness" JFK

    "The Dude abides" - the Dude

  2. #2

    Join Date
    Sep 2002
    Posts
    243
    The usual method of working is to use the dilute developer (or when it was available - Selectol Soft) first.

    The idea is that areas with the most exposure (shadows, dark greys) develop quickly, while light greys and whites do not respond as fast. So, you use a soft working developer to make a full bodied print minus blacks. Then put it into the higher concentrate developer for a short period of time to develop the blacks and add contrast to the entire print.

  3. #3
    Eric Rose's Avatar
    Join Date
    Nov 2002
    Location
    Calgary AB, Canada
    Shooter
    4x5 Format
    Posts
    4,242
    Images
    73
    If Selectol - Soft is no longer available, what is a viable alternative? I generally use Agfa developer as I use Agfa MG paper. I wonder if a very diluted first tray would work followed by a normal second tray. Or is the second try at a higher than normal dilution to bring out the blacks quickly?

    This was never an issue when I was shooting 35mm but now I do mainly 4x5 and MF so am blessed with much better negs.

    I wonder if selenium toning my negs would give me the same results with out all the fuss with two developer trays. Has anyone compared the results?

    Eric

    ps. thanks for you help so far.



    www.ericrose.com
    yourbaddog.com

    "civility is not a sign of weakness" JFK

    "The Dude abides" - the Dude

  4. #4
    c6h6o3's Avatar
    Join Date
    Oct 2002
    Shooter
    Large Format
    Posts
    3,173
    Images
    6
    "I am trying to extend the tonal range of my prints while still achieving good contrast."

    ----------------------------------------------------------------------------------------
    The easiest and best way to do this is to contact print your negatives on Azo and develop them in amidol with a water bath. You'll have complete control over the scale of every print and will use far fewer sheets of paper.
    Jim

  5. #5

    Join Date
    Sep 2002
    Posts
    243
    The use of Selectol Soft was as a substitute for having to mix the Beers Formula developers.

    I used to use Dektol (or Ektanol liquid) 2:1 in one tray and Selectol soft 1:1 in another tray. The print would start in the Selectol for 2 minutes until I had a "full print" and then I would transfer it to a water bath to wash the Selectol off the print. Then into the Dektol for 30 seconds to 1 minute until the blacks looked solid but the shadows weren't blocked.

    I haven't looked at the Photographer's Formulary website, but it wouldn't surprise me to find that they had formulated a replacement for Selectol Soft. Perhaps someone who does more B&W than I do now would know off-hand.

    In any event, you certainly could formulate Selectol Soft or the Beers Developers from standard photo chemicals available from Photographer's Formulary.

    The advice to use Amidol is also very good as it is a long scale developer and can be used quite successfully with graded paper. I've never used it with variable contrast paper and can't tell you how well it works with a dual emulsion paper.

    Again, maybe someone else like Ed Buffaloe would have some experience with Amidol and variable contrast paper.

  6. #6
    Eric Rose's Avatar
    Join Date
    Nov 2002
    Location
    Calgary AB, Canada
    Shooter
    4x5 Format
    Posts
    4,242
    Images
    73
    Thanks for all the great advise everyone. Azo sounds neat but 4x5 prints are a tad to small for these aging eyes!
    www.ericrose.com
    yourbaddog.com

    "civility is not a sign of weakness" JFK

    "The Dude abides" - the Dude

  7. #7

    Join Date
    Sep 2002
    Posts
    747
    The darkroom cookbook includes a couple of paper developers that are supposed to me similar to Selectol . They look fairly simple to mix. Both claim to be usefull for two tray developing.

  8. #8

    Join Date
    Sep 2002
    Location
    Austin, Texas
    Posts
    132
    Ansco 120 gives results that are virtually indistinguishable from Selectol Soft.

    But I agree that an amidol developer with a tray of water is as good or better than two developers.

  9. #9

    Join Date
    Sep 2002
    Location
    Nuernberg, Germany
    Posts
    214
    I use a two bath developer when making enlargements. Both developers are from Tetenal; the first bath is Dokumol and the second is Centrabrom.

    Unlike the advice from AA concerning 2 bath developers, I like to use the higher contrast of the two as the first bath, which in my case is Dokumol. Depending on the image, I let develope in the first bath until the blacks are about 60-70% done, then transfer into the softer working Centrabrom (the Tetenal version of Selectol soft), and let the highlights further develope.

    I tried it the other way around, and got nothing but muddy looking prints. This is a great developer combination which really gives additional control to the final contrast/appearence of the enlargement.
    - William Levitt

  10. #10
    bmac's Avatar
    Join Date
    Sep 2002
    Location
    San Jose, CA
    Posts
    2,156
    Images
    9
    Has selectol soft been discontinuted? I just bought some today at my local darkroom shop. They had a ton of it.

    Brian
    hi!

Page 1 of 3 123 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



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