Time for some restraint?

Discussion in 'B&W: Film, Paper, Chemistry' started by Deckled Edge, Feb 3, 2005.

  1. Deckled Edge

    Deckled Edge Member

    Jan 25, 2004
    Manhattan Be
    8x10 Format
    Fog. The "blank" edges of my recent 11x14 negatives aren't film-base, but about Gr VIII. Granted, I am anticipating using these PL100 negatives, developed at N+ in HC110 (b) for alternative process, so they are very contrasty. To check the contrast grade, I printed several on gelatin silver with a #1 filter, and yes, they are contrasty--should be fine for PtPd and Kallitypes. But, I'm bothered by the edges, and the apparent fog. The good news, is that with the silver prints I achieved great highlights, and nice, open shadows, but should there be all that fog?
    If I use a restrainer, such as benztriazole .2% 15 ml/L, it will slow development, decrease apparent film speed, and possibly lower contrast in a situation where I want contrast. These negs were developed at 68F. so temperature was not the fog-producer.
    I don't own a densitometer, so I'm not certain how much fog is there, and my home-grown densitometer is a contact print with a #2 filter to assess contrast. I haven't made the platinotypes or Kallitypes yet, so I don't know how the highlights will react, compared to silver. This is just observation of the negatives at this stage. Any suggestions?