just finished three weeks of summer courses in photography:rolleyes: in this last one, we made mostly cyanotypes, but also liquid emulsion was used. I taught in doing these images, and a lot of fine images was made. however, as I am only one person, I can't be several places in one time, and at the fianl day, I noticed some toned cyanotypes, that looked strange... I can safely say, that it was the greenest cyanotypes I have ever seen, and I curiously asked the author how she obtained that tone...... Happily she answered, that she just toned them over on out new photohouse, and that the result was a surprise to her also. She thought they'd turn out brown..... SO, instead of using soda - tannin - tea and so on, she had bleached, and browntoned these images, thinking they were images made of liquid emulsion......... my question here: was that a good discovery, or a real bad one.....? I mean, I have no ida what happens chemically, when a cyanotype is treated with conventinal bleach/browntoner (and actually she also dipped them in selenium). the results looked good. but ?