[pure-silver] Re: D-Max with pyro

----- Original Message ----- From: "Jeffrey Thorns" <puresilver@xxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Tuesday, December 13, 2005 6:36 PM
Subject: [pure-silver] Re: D-Max with pyro

I, too, would like a better understanding.

I will be the first to admit that I am not the most exacting darkroom worker, but I use the same thermometer, tanks, reels, water, developer (distilled for developers!) and fixer all the time. I vary the time very little (5-10%) and am careful to clean all equipment immediately after use.

And yet I have seen some rolls with very pronounced stain, and others with just an overall, slight warm color. If I can't count on a significant stain, I might as well go back to a 'normal' developer.

Signed,

Perplexed in Portland

Some rolls of the _same_ film or is this different film? Different films do vary a lot in the amount of stain produced.
Also, you probably already said which Pyro developer you are using but I missed it somehow. There are several alternative formulas which have proven to work in practice (and a lot of old ones that are probably of historical interest only).
I compiled a bunch of Pyro formulas for the literature which are posted at:
http://www.nonmonotonic.net/Photochemistry/Richard%20Knoppow/

 These are mostly old stuff. No garantee on which work.


I use WD2D+. Most of my film lately has been Efke100. The last roll of Efke had only subtle stain - rolls from a few months ago had pronounced stain.

Don't get me wrong, the film developed nicely - nice tonal range, very uniform (no mottling or anything) - though I think the grain was more pronounced than in the past (with the same film).

It's just that the stain itself is far less than it was.

I suppose this could be due to variations from batch to batch (of developer) from the Formulary....

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