PMK, ISO & ASA

wrote:

lew wrote:


First of all, can anyone confirm the tradeoff between ISO and ASA when using
PMK Pyro? The recommended ASA's in the Formulary pamphlet are aprox 20% less
than ISO's.
Secondly, are there any pyro developers that give full film speeds?
-Lew



One pyro developer that gives full film speed is 510-Pyro. Here's a
link to the particulars:

http://www.digitaltruth.com/techdata...tainingdev.php

510-Pyro fits Mr. Knoppow's description of speed enhancing developers,
containing phenidone, but no bromide. This developer offers many
benefits over PMK, including improved film speed, reduced grain,
shorter development times, reduced general stain, compatibility with
rotary processing, single-solution convenience, improved shelf life,
and compatibility with extreme dilution/ reduced agitation development
techniques.

Jay




Hi Jay,

Very interesting. I will have to try 510-Pyro. Thanks for the
information. This shows that innovation in film-based photography is
still strong!


Francis A. Miniter

Francis A. Miniter wrote:
wrote:

lew wrote:


First of all, can anyone confirm the tradeoff between ISO and ASA when using
PMK Pyro? The recommended ASA's in the Formulary pamphlet are aprox 20% less
than ISO's.
Secondly, are there any pyro developers that give full film speeds?
-Lew



One pyro developer that gives full film speed is 510-Pyro. Here's a
link to the particulars:

http://www.digitaltruth.com/techdata...tainingdev.php

510-Pyro fits Mr. Knoppow's description of speed enhancing developers,
containing phenidone, but no bromide. This developer offers many
benefits over PMK, including improved film speed, reduced grain,
shorter development times, reduced general stain, compatibility with
rotary processing, single-solution convenience, improved shelf life,
and compatibility with extreme dilution/ reduced agitation development
techniques.

Jay




Hi Jay,

Very interesting. I will have to try 510-Pyro. Thanks for the
information. This shows that innovation in film-based photography is
still strong!


Francis A. Miniter


No problem, Francis. If you have any questions or suggestions, feel
free to contact me.

Jay