Dr5 chrome

dr5, or dr5 Chrome, is a reversal black and white process, through which most kinds of black-and-white negative films produce transparencies (slides). The dr5 process is a chemical reversal process, rather than the standard, light-based reversal for black and white transparency (slide). It was developed by photographer and photographic chemist David Wood.

History
The "dr5 process" is the fifth incarnation of the process, derived by experimentation by Wood from 1989 through 1991. Though reversal film processing was well known throughout photographic history, the dr5 process is proprietary. Privately performing the process alone until 1998, Wood afterward briefly teamed with A&I Color Lab in Los Angeles CA, via their affiliate lab AIM.

The dr5 process won best new product in 1999 at the '99 Photo Expo-Plus Expo Review.

In August 2001, Wood opened an independent lab, that used a processor made for dr5 specifications by Tecnolab in Italy.