Quote:
Originally Posted by MartyNL
Hi Ian, they look fantastic. Are these more like photograms?
I'm also curious about the longevity of cyanotypes, so could you let us know about the colour intensity over time, please?
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Prussian Blue is a very stable pigment and, provided the print has been well washed, should last a considerable time. The blue actually intensifies on exposure to air (oxygen) up to a point.
Good to see so many 'lockdown cyanotypes' appearing!
Here are a couple of my recent ones. Both made using the Mike Ware single-solution ferric ammonium oxalate formulation.