Term - Log e 2
|Log e 2||SWPP and BPPA Photographic Glossary|
Friday 30th January 2015
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