Re: PYROCAT-MC GLYCOL: Alternative Process Film Development
Sandy, What about the -P concotion? I thought it was to give higher apparent sharpness (at the cost of larger grain) when using intermittent agitation (such as tray processessing) -Jeremy- On 11/29/06, Sandy King <sanking@clemson.edu> wrote: Mark, Results from the two formulas are similar, and you can basically use the same times with -MC as with -HD. The most fundamental difference is that you will get greater apparent sharpness with -MC in rotary (continuous) processing than with -HD, and if developing for the high contrast needed for alternative printing there will be slightly less B+F stain with -MC. The color of the stain is also slightly different with -MC, but so far as I can tell this not change results very much. In essence, if you want to do rotary processing I recommend -MC. For minimal and stand development I recommend -HD. For other intermittent types of agitation I recommend both. Best, Sandy At 10:44 AM -0800 11/29/06, Mark Booth wrote: >I noticed that Sandy King is offering his new formula(s) of both >Pyrocat-MC Glycol and Pyrocat-HD Glycol through Photographers' >Formulary. I am interested in their staining properties contrasted >to pyro for alternative printing. > >What are the primary differences between the two formulas? (Speed; >Compensation/Expansion; Sharpness; Etc) When would one formula have >preference over the other developer variant or are each very similar? > >I find the organic solvent approach very intriguing and practical >for consideration. I primarily work with HP5 Plus; Bergger BPF 200; >Acros 100; films. Most frequently use the Farber's shared, >Pyro-triethanolamine formula. > >Thank you, >Mark
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