Back in the beginning of photography, film and plates were orthochromatic. Orthochromatic means the material isn't sensitive to red light. That makes processing easier, since then it's possible to navigate a darkroom, load film, and even develop "by inspection". But since any subject with the color red in it became darker with Ortho film, certain scenes became problematic. Blue skies were rendered white, skin color with more red pigment went dark, freckles and zits were emphasized. In the early part of the 20th Century, panchromatic films became the norm. Ortho film was still the norm for many technical uses of photography. For example copywork, typesetting, etc. But with panchromatic film, tonalities of the world around us were more accurately mapped to their associated gray tones. Today, when film photography itself is already a rarity, I've opted to play with the unusual characteristics of film including the color sensitivity. What happens to a red rose on a
In my free time, I like to use the darkroom at Mills College. I've been experimenting with X-ray film just because it's so cheap and there's plenty available. Recently it occurred to me that some areas I have access to aren't in use. So for a long weekend, I co-opted a little gallery space " Slide Space 123 " to do some shooting. The natural light in Slide Space is nice. There are white walls, and plenty of room to navigate. At one point I had a 4x5 (an old Toyo my high school teacher Mr Bernucci gave me,) My Linhof 5x7 and my red bellows 8x10 that my grandfather gave me all setup swapping cameras for similar scenes. So far I've only developed the 8x10 xray films. I had trays setup in a darkroom and would shoot a sheet and walk it over and develop it immediately afterwards. See more here