Hi: I do most of my pinhole work with these media.
I use ortho film. Yes it can be developed under safelight. A standard film developer will produce a high-contrast film - Ortho film is usually a high contrast film. It can be developed to give a continuos tone negative, either by using a highly diluted paper developers (Selectol, Dektol, Sprint ) etc or a special low contrast developer (Soemarko LC-1) Cyanotype is a non-silver process. It must be exposed to ultraviolet light - the convenient and cheap source of UV light is the sun. Exposure time it too critical - A proper exposure can be made in a few minutes under the sun. The color changes as it exposes - so it is easy to judge when the print has recieved the correct exposure. Once the print is exposed its taken inside and developed in plain water. No other processing is necessary - the print are quite archival and will last for years (100's if properly taken care of). I don't know of anyone currently selling cyanotype paper. Most people buy a kit, or the chemicals and coat their own paper. (not difficult) If you want to try cyanotype I could send you some of the paper I have coated. The cyanotypes are blue and white, although they can be toned to a warm reddish brown. Gord On Thu, 15 Aug 2002 [email protected] wrote: > Hello Everybody > I was wondering if anyone could help me. I would like to know more about > ortho film. > I have heard it can be developed in a tray under a safe light. Also I have > heard there are alternative processes called canotypes that can be developed > in sunlight. > I would appreciate some information about them > Cheers > Ben > --------------------------------------------------------- Gordon J. Holtslander Dept. of Biology [email protected] 112 Science Place http://duke.usask.ca/~holtsg University of Saskatchewan Tel (306) 966-4433 Saskatoon, Saskatchewan Fax (306) 966-4461 Canada S7N 5E2 ---------------------------------------------------------
