Term - Chemical focus
|Chemical focus||SWPP and BPPA Photographic Glossary|
Monday 9th December 2013
A point at which a lens brings the actinic rays to focus. In a modern fully corrected lens, chemical and visual focus coincide.
Information provided by: SWPP BPPA
SWPP & BPPA, 6 Bath St, Rhyl, LL18 3EB