This is a brief excerpt from Strobist
There is nothing about flash in this post, except for “pre-flashing,” and that is not what you think.Every time I adjust the exposure slider in a raw converter or tweak the tonal curve into a subtle S-shape, I think back to how we used to do some pretty insane stuff—very improbably—with film, subtle tweaks of light and a witches-brew of chemistry.If you are under 40, most of this is gonna be brand new. If you are older than that and used to shoot night sports for a newspaper, see how your experience matches up… __________Short version: At every step of the film and chemical process we used to “cheat” to create photos that, by all rights, should not exist.How You Were Supposed to Do itThe whole expose-develop-print process was pretty straightforward. You load film into your camera. You expose it. You develop it in a tank. You get negatives.You load those negs into an enlarger, which was basically a vertical projector. Then you repeat the exposure-development process onto a projected piece of light-sensitive paper instead of film. This produced a negative of a negative, or, a positive.Sounds simple enough, right? And it worked great, …
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