Fomatone

[Robert]

I glanced at the data sheet. It looks slower then Azo at all contrast levels higher then 1. Is it really possible to use it with an enlarger?

 

[Robert]

I think so-) OTOH I found this

http://www.fotoimpex.de/Home/engl_photopap...e-fomatone.html

Without a filter it seems pretty fast at 600 speed. But stick a filter on it and you drop to 30 or less. 30 is faster then Azo but pretty slow. But then they claim exposure times don't increase for grades up to 3. It's offical I'm confused.

http://www.foma.cz/en/tech_listy/F_tone.htm

Calls the 110 number ISO R speed

 

[SteveGangi]

So what's the bottom line? Is it an enlarging paper (fast) or contact paper (slow)? I am sooooooo confused!

 

[Michael A. Smith]

Contact printing papers are silver chloride papers. Chlorobromide papers are enlarging papers. Some enlarging papers are just bromide papers, but most are chlorobromide. The paper under discussion is an enlarging paper. The beautiful thing about silver chloride papers is not the slowness, but the gradation of tones. Chlorobromide papers have more toe and more shoulder; they are not straight line papers are chloride papres (contact printing papers) are.

Sure, speeds will be long with dense filters. That has nothing to do with a paper being a contact printing paper or not.

Michael A. Smiith

 

[c6h6o3]

JandC is now selling inexpensive trial packets of Fomatone. I must say, they sure got right on the price. Hope it stays that way.

http://www.jandcphotography.com

 

[David A. Goldfarb]

Azo also has that very quick response to selenium starting with an increase of Dmax with a very slightly warm tone to a sudden shift toward purple-brown, which can be nice for some things, but isn't what I normally prefer. Try a weaker selenium solution.