Digital single-lens Reflex Camera
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A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that uses a mechanical mirror system and pentaprism to direct light from the lens to an optical viewfinder on the back of the camera. The basic operation of a DSLR is as follows: for viewing purposes, the mirror reflects the light coming through the attached lens upwards at a 90 degree angle. It is then reflected twice by the pentaprism, rectifying it for the photographer's eye. During exposure, the mirror assembly swings upward, the aperture narrows (if stopped down, or set smaller than wide open), and a shutter opens, allowing the lens to project light onto the image sensor. A second shutter then covers the sensor, ending the exposure, and the mirror lowers while the shutter resets. The period that the mirror is flipped up is referred to as "viewfinder blackout". A fast-acting mirror and shutter is preferred so as to not delay an action photo. All of this happens automatically over a period of milliseconds, with cameras designed to do this 3 10 times a second.
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GarantieWeitere Informationen
- Allgemeine Informationen
- GTIN 09786130263454
- Anzahl Seiten 144
- Genre Wärme- und Energietechnik
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Herausgeber Alphascript Publishing
- Gewicht 233g
- Größe H220mm x B150mm x T9mm
- Jahr 2009
- EAN 9786130263454
- Format Fachbuch
- ISBN 978-613-0-26345-4
- Titel Digital single-lens Reflex Camera
- Untertitel Single- lens reflex camera, Digital camera, Photographic lens, Viewfinder, Shutter (photography), Image sensor, Depth of field, Lenses for SLR and DSLR cameras, Image sensor format
- Sprache Englisch
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