U of S | Mailing List Archive | alt-photo-process-l | RE: Rough Early Mid-Tones and Highlights

RE: Rough Early Mid-Tones and Highlights

Hi Michael, it seems that you have to change your paper (since it
doesn't work good with other iron processes too)... Which paper are you

BTW, try New Cyanotype too -> IME, it gives better tonal gradation /
highlights than you get with the classic formula. (Use 1 drop 40% Citric
Acid per ml of sensitizer for papers that cause problems with New


-----Original Message-----
From: Michael Koch-Schulte [mailto:mkochsch@shaw.ca] 
Sent: Sunday, March 11, 2007 3:08 PM
To: alt-photo-process-l@sask.usask.ca
Subject: Rough Early Mid-Tones and Highlights

Can someone give me an explanation of why highlights and early mid-tones
in my cyanos (and other iron processes for that matter) are not as
smooth as the later mid-tones and shadows. It's not my negative, they're
also rough on my stouffer wedge too. 20, 30, 40 per cent are
consistently mottled and rough while 50 per cent onward are nice and
smooth. I'm using 50:50 A 20%:B 10%. Thx.