Bleach bypass

The bleaching or omission of the Bleach Bypass effect is a visual effect in which the process of bleaching is omitted in the color film processing partially or completely. Wherein the black silver is converted to silver bromide and not remain with the dyes in the film. The result is a color image, which is superimposed on a black and white image. This gives the image less saturation and exposure latitude and increased contrast and more graininess. Usually bleach bypass is used in conjunction with an under-exposed by an aperture film, in order to improve the effect even more.

Use in films

The Bleach Bypass effect was first used in 1960 Kon Ichikawa film Ototo of the cinematographer Kazuo Miyagawa. He was inspired by the color scheme of the 1956 published Moby Dick, which was made ​​in Technicolor. In this case, the effect is achieved by the superposition of a black and white image. Despite this early discovery of the Bleach Bypass effect was used again in Michael Radford's 1984 film.

The effect also was used in the films Saving Private Ryan, Snatch, Minority Report, and seven 300

Related Techniques

• Cross development