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Camera.doc

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Camera FromWikipedia,thefreeencyclopedia Jumpto:HYPERLINK"http://en.wikipedia.org/wiki/Camera#column-one"navigation,HYPERLINK"http://en.wikipedia.org/wiki/Camera#searchInput"search Forotheruses,seeHYPERLINK"http://en.wikipedia.org/wiki/Camera_(disambiguation)"Camera(disambiguation). SectionthroughamodernHYPERLINK"http://en.wikipedia.org/wiki/Single-lens_reflex_camera"single-lensreflexcamera Lefttoright:anAgfaboxcamera,aPolaroidLandcamera,andaYashica35mmSLR Acameraisadevicethatrecordsimages,eitherasastillphotographorasmovingimagesknownasvideosormovies.ThetermcomesfromtheHYPERLINK"http://en.wikipedia.org/wiki/Camera_obscura"cameraobscura(HYPERLINK"http://en.wikipedia.org/wiki/Latin"Latinfor"darkchamber"),anearlymechanismofprojectingimageswhereanentireroomfunctionedasareal-timeimagingsystem;themoderncameraevolvedfromthecameraobscura. CamerasmayworkwiththelightoftheHYPERLINK"http://en.wikipedia.org/wiki/Visible_spectrum"visiblespectrumorwithotherportionsoftheHYPERLINK"http://en.wikipedia.org/wiki/Electromagnetic_spectrum"electromagneticspectrum.Acameragenerallyconsistsofanenclosedhollowwithanopening(HYPERLINK"http://en.wikipedia.org/wiki/Aperture"aperture)atoneendforHYPERLINK"http://en.wikipedia.org/wiki/Light"lighttoenter,andarecordingorviewingsurfaceforcapturingthelightattheotherend.AmajorityofcamerashaveaHYPERLINK"http://en.wikipedia.org/wiki/Photographic_lens"lenspositionedinfrontofthecamera'sopeningtogathertheincominglightandfocusallorpartoftheimageontherecordingsurface.ThediameteroftheapertureisoftencontrolledbyaHYPERLINK"http://en.wikipedia.org/wiki/Diaphragm_(optics)"diaphragmmechanism,butsomecamerashaveafixed-sizeaperture. AtypicalstillcameratakesonephotoeachtimetheuserpressestheHYPERLINK"http://en.wikipedia.org/wiki/Shutter_button"shutterbutton.Atypicalmoviecameracontinuouslytakes24HYPERLINK"http://en.wikipedia.org/wiki/Film_frame"filmframespersecondaslongastheuserholdsdowntheshutterbutton. Contents [HYPERLINK"jav