Bleach bypass
From open-encyclopedia.com - the free encyclopedia.
Bleach Bypass is a film technique used in such movies as Se7en or The Crow. Originally, the look would start in the laboratory during the color processing sequence by skipping the bleach stage. By doing this, the silver is retained in the image along with the color dyes. The result is a black and white image over a color image. The images usually would have reduced saturation, an increased contrast, and an overall pastel look.
While originally a laboratory technique, it can now be achieved digitally through computer generated effects and filters.
The upcoming movie Batman Begins will reportedly use this technique for some, if not all, scenes.
