Quid about cyanography ?

BLUE IMAGES WITH AN INDISTINGUISHABLE STATUS BETWEEN PAINTING AND PHOTOGRAPHY CYANOGRAPHY, AN ANCIENT TECHNIQUE THAT HAS BECOME AN ALTERNATIVE ART FOR The formula was perfected in 1842 by a brilliant scientist, John Herschel: A - ferric ammonium citrate B - potassium ferricyanide These chemicals are each mixed with distilled water (A at 20% and B at 8%) then the 2 solutions are combined in equal parts to create a photosensitive emulsion, i.e. one that reacts to light. The emulsion is greenish-yellow and turns blue after exposure to ultraviolet [...]

Focus on Cyano

Designation of uncontrolled origin Photogenic drawing or photogram Anna Atkins inaugurates a new herbarium for scientific purposes: she arranges the plants on paper coated with cyanotype emulsion, writes their names in Latin and English and then sunbathes them. The image reveals more than just a silhouette because the stems, leaves and flowers block the light rays according to their thickness. Anna Atkins is thus the author of the first book of photography, she will publish in cyanotype 11 volumes of census of the British flora, her last works [...]


CYANOTYPE INK RECIPE The chemical formula dates back to 1842 (thanks John Herschel) there are several variations (thanks Mike Ware). Here is the recipe I use for my creations, detailed step by step to make 200ml of cyanotype emulsion. Azul Loeve 1/ INGREDIENTS A - ferric ammonium citrate, a green-yellow powder B - potassium ferricyanide, a red-orange powder + distilled water -> Both powders must be handled with the usual precautions as in a chemical laboratory, in particular, isolate the work area, prohibit any food or drink, do not [...]


SEMINARS 2020-2021 Calendar ... unpredictable | Organisation of training on demand Adult - Child (from 5 years old) Association - Company + possible intervention in schools Groups of 3 to 8 people Private lessons for 1 or 2 people. In Ile de France in Charenton le Pont In Provence at Allauch In Auvergne at La Ganille Other possible locations with installation of suitable equipment. Introductory courses practice or of specialisation. Chemistry is on the programme, painting and photography. Several formulas are proposed. The budget is calculated according to the duration, [...]


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