Results 1 to 4 of 4

Thread: Dev time for negatives

  1. #1

    Join Date
    May 2014
    Location
    Cote d'Azur France
    Posts
    80

    Dev time for negatives

    Hello - I have read from time to time that people develop film in weak or very weak solutions for long periods of time. What does this do, when is this a benefit?

    Thanks for any comments

    Peter

  2. #2

    Join Date
    Apr 2013
    Location
    Kelowna, British Columbia, Canada
    Posts
    462

    Re: Dev time for negatives

    I don't know everything, but one thing is does is decreasing contrast giving you better midtones.

    Some films such as x-ray film is designed for blacks and whites only, however using the right, slow developing solutions gives them a beautiful full range of tones.

  3. #3

    Join Date
    Sep 2010
    Posts
    420

    Re: Dev time for negatives

    Prolonged development with regular agitation at lengthy intervals in highly dilute developers (usually "one shot") is called "compensating development". The idea is that the developer will exhaust itself in the highlight areas of the negative, where concentrations of exposed silver halides are the greatest, and continue to work in the shadow areas of the negative where there are fewer exposed silver halides. This should result in reduced highlight contrast (more detail in the highlights) and increased density in the shadow areas, for more detail there.

  4. #4

    Join Date
    May 2014
    Location
    Cote d'Azur France
    Posts
    80

    Re: Dev time for negatives

    thank you both for your comments - I guess dilution and time and temp is all matter of experience and experimenting....
    Cheers

Similar Threads

  1. long time listener, first time caller
    By James O. Kenney in forum Cameras & Camera Accessories
    Replies: 14
    Last Post: 17-Oct-2015, 23:41
  2. Replies: 16
    Last Post: 13-Aug-2011, 19:09
  3. Testing EI - Neg Dev Time - Print Dev Time
    By Alessandro V. in forum Darkroom: Film, Processing & Printing
    Replies: 17
    Last Post: 18-Apr-2011, 11:42
  4. Will color negatives and chromes stand the"test of time"?
    By David Richhart in forum Darkroom: Film, Processing & Printing
    Replies: 4
    Last Post: 23-Aug-2000, 00:58
  5. Shutter time vs. spot meter time
    By Bob Passage in forum Style & Technique
    Replies: 6
    Last Post: 4-Feb-2000, 14:37

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
  •