Difference between revisions of "Microprism"
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| − | A '''microprism''' is a focusing aid made of an area very small prisms built in to a focusing screen; this causes a slightly out-of focus image to "sparkle" or "shatter" compared to the surrounding plain ground-glass screen. Microprisms are often used in [[SLR]]s, often in combination with a [[split-image device]]. | + | A '''microprism''' is a focusing aid made of an area very small prisms built in to a focusing screen; this causes a slightly out-of focus image to "sparkle" or "shatter" compared to the surrounding plain [[ground glass|ground-glass]] screen. Microprisms are often used in [[SLR]]s, often in combination with a [[split-image device]]. |
Latest revision as of 14:42, 19 April 2012
Glossary Terms
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| Microprism collar surrounding split image spot image by Voxphoto (Image rights) |
A microprism is a focusing aid made of an area very small prisms built in to a focusing screen; this causes a slightly out-of focus image to "sparkle" or "shatter" compared to the surrounding plain ground-glass screen. Microprisms are often used in SLRs, often in combination with a split-image device.
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| Removable Olympus focusing screen; microprism ring surrounds split-image center image by Tim Williams (Image rights) |
