Re: Great Enl. Negs - Better

TERRY KING (KINGNAPOLEONPHOTO@compuserve.com)
Thu, 29 Jan 1998 04:09:05 -0500

Message text written by Carl Weese
> My recent first test of PMK pyro using HP5+ gave me a much
higher effective contrast than any standard development of that film has
done, giving adequate contrast for a Ziatype with no contrasting agent.
That is equivalent to a range of about 1.9 or 2.0 printing from negs
souped in "regular" non-staining developers. I'm not sure how the stain
density will affect densitometer readings, and haven't a densitometer
handy right now to check. But it prints in platinum like a 2.0 neg. I
haven't yet had a chance to see whether it will also print at a much
lower contrast on standard silver paper, but it looks promising just
eyeballing the negs.---Carl

<

But has anybody else tried a comparison between the developers and film
being advocated in this thread and amidol with FP4 for Pt/Pd printing ? It
was a test I did before I started platinum printing. If one is using long
exposures to obtain in camera negs for platinum printing, the films
mentioned in this thread such as Agfa 100, HP5 and TMax and Tri X are not
designed for the purpose.

Practice will show that if there is brown gunge all over the negative,
offering a higher base + fog reading, then the negative will be flattened
by the amount of the increase.

Terry King

Terry King