it looks like we don t have a specific address for federation credentials verification service which makes giving directions tricky this business might not have an official storefront or it might move to multiple locations throughout the day
Cyanotypes (also called sun prints) were the first alternative process that we had to master. Cyanotype is a traditional alternative photographic process that requires treated paper, objects, the sun, and water to produce a cyan-blue print. They are super easy, inexpensive and lots of fun.
The cyanotype process has a long exposure scale, so the best cyanotype prints are made when you use a negative with a wide density range. That means that if you have detail in your very bright highlights (Zone 10 or 11, for you zone system folks) you can reproduce it in cyanotype and still get great shadow detail. cyanotype with a blue image on a white background is obtained using a negative transparency. In order to obtain a pale white image on a blue background, a positive transparency must be used. Cyanotypes are created with a simple solution of ferric ammonium citrate and potassium ferricyanide.