Bleach omission
The bleaching out or the bleach bypass effect is a visual effect in which the process of bleaching is partially or completely omitted during color film development. As a result, the black silver is not converted into silver bromide and remains on the film with the dyes. The result is a color image overlaid with a black and white image. This gives the image less saturation and exposure range, as well as increased contrast and graininess . Most of the time, the film is underexposed by an aperture value when recording in order to increase the effect of the bleach bypass.
Use in movies
The bleach bypass effect was first used in Kon Ichikawa's 1960 film Otôto by cinematographer Kazuo Miyagawa. He was inspired by the color scheme of the Moby Dick published in 1956 , which was produced in Technicolor . The effect was achieved by overlaying a black and white image. Despite this early discovery, the bleach bypass effect wasn't used again until Michael Radford's 1984 film .
The effect was also used in the films Saving Private Ryan , Snatch - Pigs and Diamonds , Minority Report , Seven and 300 .
Related techniques
Web links
- Digital bleach bypass effect with GIMP
- Digital bleach bypass effect with Adobe Photoshop
- Digital bleach bypass effect with Nik Color Efex Pro