Term - Log e 2
|Log e 2||SWPP and BPPA Photographic Glossary|
Tuesday 16th September 2014
Log e 2
The logarithmic value (to the base 10) of the relative brightness exposed on the film when undergoing sensitometric testing.
Information provided by: SWPP BPPA
SWPP & BPPA, 6 Bath St, Rhyl, LL18 3EB