Term - Diopter
|Diopter||SWPP and BPPA Photographic Glossary|
Monday 1st September 2014
Unit used to express the power of a lens. It is the reciprocal of the focal length expressed in meters.
Information provided by: SWPP BPPA
SWPP & BPPA, 6 Bath St, Rhyl, LL18 3EB