The Photographic Glossary | J: JPEG and Joule

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Photographers’ gobbledygook can be confusing! This photography dictionary will help you find the real significance behind that jargon.

JPEG
JPEG (Joint Photographic Experts Group) is a file compression method used in Digital Photography that shrinks a file's storage size, but which can also cause image degradation as a result of data loss.
(see Lossy)
Joule
Unit of energy in the SI (Système International) system of units. The joule is sometimes used in photography to indicate the output of an electronic flash.

Peter Ashby-Hayter, Bristol, U.K. Bristol Photographer
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