Term - Entrance pupil

Entrance pupil

SWPP and BPPA Photographic Glossary

Thursday 24th May 2012

The Annual Convention
with a huge list of
cutting edge speakers from
4 continents.

Image Competition
Free entry for SWPP members.

Entrance pupil

A size of the beam of light which, entering the elements of a compound lens that are in front of the aperture, completely fills the iris diaphragm.

Information provided by: SWPP BPPA
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