New paper developer combo

Discussion in 'B&W: Film, Paper, Chemistry' started by goros, Nov 5, 2007.

  1. goros

    goros Subscriber

    Jun 6, 2006
    The Basque C
    Medium Format
    Hi all,

    I'm going to use a new combination paper-developer. The problem is that neither in the paper nor in the developer are developing times.

    Is there any easy test I can perform to find out the most adequate times?

    I remember reading a test like the one I'm asking for in an old issue of B&W Photography by Les McLean but I'm unable to find it.

  2. gainer

    gainer Subscriber

    Sep 20, 2002
    Most paper should be developed to completion, and you can watch it go, so do a print, leave it in the developer until the black is black. It will usually be a while after that when the white starts to fog if your print exposure was correct.

    To do a quick and dirty test, develop a test strip in roomlight and watch the timer to see how long it takes to get really black. Then take a strip of unexposed paper and develop it for the same time in total darkness. It should still be white.

    It does no good, as a rule which you should learn from experience even if I didn't tell you, to jerk an overexposed print before the proper maximum development time. All you get is a wasted piece of paper anyway.