fp4 in pyrocat HD for cyanotype

Joined
Jan 1, 2006
Messages
32
Location
France
Format
4x5 Format
Hi,

looking for nice cyanotype print with fp4 in pyrocat HD, what developping time do you thinks are good ?

Thanks
 

fhovie

Member
Joined
Mar 20, 2003
Messages
1,250
Location
Powell Wyoming
Format
Large Format
Since most alt process printing is UV printing and since most pyro developers mask UV, pyro will give you greater effective film density. Since cyanotype is a high contrast (relative to most other alt processes) printing method, I would develop for normal print times that you would use for regular enlarger printing. Do not do anything to increase the base fog (like the Hutchings post soak) this would be counter productive and even he no longer recommends it. For other alt processes, I (and many others) go for more overall density (1.5 times normal?). A CI of 1.6 or more is good for Kalitype and VanDyke.
 
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