Term - Optical wedge
|Optical wedge||SWPP and BPPA Photographic Glossary|
Monday 1st September 2014
A strip of material, clear at one end and gradually increasing in opacity, which is used to determine the effect of light intensities on sensitized materials.
Information provided by: SWPP BPPA
SWPP & BPPA, 6 Bath St, Rhyl, LL18 3EB