The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 331
... lens screen image mirror mirror shutter screen film typically between one and 500 second . For longer ex- posures ( time exposures ) a special setting holds the shut- ter open as long as the exposure button ( release ) is held down ...
... lens screen image mirror mirror shutter screen film typically between one and 500 second . For longer ex- posures ( time exposures ) a special setting holds the shut- ter open as long as the exposure button ( release ) is held down ...
Page 333
... lens forming an image in the camera is a converging lens , the simplest form of which is a single biconvex ( lentil - shaped ) ele- ment . ( The word lens is derived from the Latin name of the lentil . ) In theory , such a lens makes a ...
... lens forming an image in the camera is a converging lens , the simplest form of which is a single biconvex ( lentil - shaped ) ele- ment . ( The word lens is derived from the Latin name of the lentil . ) In theory , such a lens makes a ...
Page 334
Groups of lens elements for correcting aberrations Tele- converter lenses Formation of the latent image Use of ortho- chromatic films. Optical performance . A simple lens produces a very imperfect image , which is usually blurred away ...
Groups of lens elements for correcting aberrations Tele- converter lenses Formation of the latent image Use of ortho- chromatic films. Optical performance . A simple lens produces a very imperfect image , which is usually blurred away ...
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