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dr5 chrome

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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).[1] It was developed by photographic chemist David Wood.[1]


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[2] in Los Angeles CA, via their affiliate lab AIM.[3]

The dr5 process won best new product in 1999 at the '99 Photo Expo-Plus Expo Review.[4][5]

In August 2001, Wood opened an independent lab, then called "dr5 Chrome", in New York City.[3][6] The lab used a processor made for dr5 specifications by Tecnolab[7] in Italy. Following a period after 2005 it was located in Denver,[8] then relocated to Stuart, IA.


  1. ^ a b "dr5 Chrome Lab". Inside Analog Photo Radio. 2008-12-13. Archived from the original on 2009-02-10. Retrieved 2008-12-22.
  2. ^ "A&I's website".
  3. ^ a b "Lab Profile: dr5: B&W Chromes Reborn With Proprietary dr5 Process". Rangefinder. 2005. Archived from the original on 2011-07-15.
  4. ^ "Photo Expo-Plus".
  5. ^ "Expo review".
  6. ^ "Dr 5 Chrome". Retrieved 1 November 2010.
  7. ^ "Tecnolab's website".
  8. ^ "dr5 Chrome relocated to Denver". June 30, 2005. Retrieved 1 November 2010.

External linksEdit