- Joined
- Apr 6, 2012
- Messages
- 11
- Format
- 35mm
Hello creative people.
I'm making cyanotype prints on cotton fabric. I'm mostly using paper negatives (usually oiled), and natural sun. I live in Iran where there's no shortage of sun, although it's pretty weak in winter. I leave the prints outside for a whole day.
I'm getting acceptable results, but my prints obviously lack contrast, I do not get the mid-tones, and everything is quite soft.
There probably are different reasons for this (including the negatives and/or underexposure), but my main concern is the Ammonium Iron (III) Citrate that I used for the emulsion.
I see in recipes that they suggest the green form, but I could only get the brown form which apparently needs more exposure.
My question is this basically, does anybody have experience with the BROWN form of the chemical, and what differences it can make when used instead of the green form?
I'm making cyanotype prints on cotton fabric. I'm mostly using paper negatives (usually oiled), and natural sun. I live in Iran where there's no shortage of sun, although it's pretty weak in winter. I leave the prints outside for a whole day.
I'm getting acceptable results, but my prints obviously lack contrast, I do not get the mid-tones, and everything is quite soft.
There probably are different reasons for this (including the negatives and/or underexposure), but my main concern is the Ammonium Iron (III) Citrate that I used for the emulsion.
I see in recipes that they suggest the green form, but I could only get the brown form which apparently needs more exposure.
My question is this basically, does anybody have experience with the BROWN form of the chemical, and what differences it can make when used instead of the green form?