ChinaCamp10mTannin

ChinaCamp10mTannin

Sunprint commercial cyanotype paper, 5x4 contact print. Bleached in sodium carbonate solution (3g/l) until the image was removed, then toned in wine tannin (2g/l). The amount of blue in the result is a surprise - the bleached paper had only a slight overall blue tone.
Location
China Camp, Marin County, California
Equipment Used
Wista, 135mm Symmar S
Film & Developer
Delta 100 in FG-7
Paper & Developer
Sunprint commercial cyanotype, water, sodium carbonate solution, wine tannin
I like this one over the first one you posted. Does this bleach/tone combo usually remove all the blue?
 
I was expecting a reddish-brown. This is a commercial paper, so I don't know the exact formula used. It may be I need a stronger bleach (maybe ammonia in place of sodium carbonate?), or the wine tannin powder needs to soak longer. The paper did bleach to an even very pale blue tint, even the fully exposed ends - the sheets I use are 6x4 inches. I should also try some without the citric acid in the original development. This is the same print as the blue one.
 

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grahamp
Date added
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Image metadata

Filename
ChinaCamp10mTannin.jpg
File size
843.1 KB
Dimensions
800px x 633px

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