Apache-Talk @lexa.ru 

Inet-Admins @info.east.ru 

Filmscanners @halftone.co.uk 

Security-alerts @yandex-team.ru 

nginx-ru @sysoev.ru 

   


   


   















      :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

filmscanners: Getting 15 stops or latitude out of B&W negative film?



Someone has made a claim that he can get 15 stops of latitude out of B&W
negative film.  Specifically TMax 100.  Here's my understanding:

Since stops are either 1/2 the amount of light, or 2x the amount of light,
15 stops would be 2**15, or 32768:1, which is a dynamic range of 4.5.  My
experience has been the best one can get out of B&W film is around 7/8
stops, which is a dynamic range of 2.1/2.4.

Thoughts?  Anything wrong with my arithmetic?




 




Copyright © Lexa Software, 1996-2009.