Peter Hogan - Presysol
Specialist black & white chemicals
for fine photographers



















NEW!!! We now have ready the long-awaited successor to Prescysol - the new 'EF' - extra fine and very sharp, and some very interesting toners and paper developers. And we stock the Cromatek range of filters and accessories!



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Specialist Black and White Products for Fine Photographers - Peter Hogan

Feedback - On Chemicals

All comments are true,
unsolicited and verifiable

Hi Peter.

Used Prescysol for the first time yesterday & am most impressed. Developed a 35mm. Delta 400, rated at 400 & exposed in a Ricoh GR 4 compact (an amazing lens!) for 10.5 mins, water stop & Alkifix for 3 mins. The negs. appear to be excellent (not had chance to print any yet). They are very sharp, fine grained with a remarkably even density. They have stained well (better than Exactol), having a delicate brown shade - quite unlike the mess that Pyro makes. The negs. were exposed under a wide range of conditions, from indoors to bright sun on the seafront, yet the similarity of the individual densities is amazing. I am delighted with the results, and am puzzled by Roger Maile's comments in "Mono" mag. saying that he could not detect any great difference between negs. developed in Prescysol, ID11 & CM Pyro. I know which negs. will be the easiest to print & give the best results! Well done & keep up the good work - monochrome needs people such as you. I will spread the good word at our N.Wales Mono Group meeting next week.

Cheers, Geoff.

Hi Peter,

It seems as if things are going well for your prescysol. I also hope to include its use in one of my future 'Printer's Art' articles for B+W mag. The trouble is if you use it correctly you don't need much printing skill to get a decent print ;-)

I find the partial stand method extremely useful for obtaining that flexible negative that leads to easy printing. This developer has everything I look for in a developer, smoothness of tone, very fine grain and offers sharpness to a high degree particularly if you use the PS method of development.

Yes Peter I'm hooked.

Thank you for introducing me to your excellent prescysol.

All the best,

Trevor.

PS. I need to do some N-2 development using the PS method any ball park figures for this?

Hi Peter,

I've just finished with my first test of your remarkable developer. Needless to say I am very impressed! The sharpness, fine grain and tonal gradations are amazing. I have been very successful extending the stand development with Ilford FP4+ to up to one hour without streaking. I diluted the developer 1 1/4: 6 1/4 : 500, agitating for the first 60 seconds, then for 30 seconds at the halfway mark. For the 30 minutes development I diluted the developer 2 1/2 : 12 1/2 : 500, and agitated for 30 seconds at 15 minutes. ABSOLUTELY BEAUTIFUL NEGATIVES! I was equally successful using HP5 with the same times and dilutions. I can't wait to try your Prescysol 'EF'.......I just received your e-mail that you will be selling Barry Thornton's products. Bravo!!! However, I love your developer even more than his remarkable Dixactol. In any event, thank you for keeping monochrome alive and better than ever!

Steve Hart,
Brooklyn,
New York.

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