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1、浅谈数码摄像机比较数码相机优劣势TalkaboutdigitalcamerasandcomparethemtodigitalcamerasAfewyearsago,alotofpeoplehavebeentalkingaboutthedevelopmentofthemobilephone,asthecamera,MP3,andotherfunctionsinto,cellphonewillbecomethefutureofportableentertainmentterminal,mobilephonewillreplaceMP3anddigitalcamera?Now,theto
2、picofdiscussionhasreversedcourse,focusshiftedtodigitalcamerasanddigitalvideocamera,becausethelasttwoyears,digitalcameramadeabreakthroughinthepixels,theeffectofvideooutputalsohadtheverybigprogress,fromsilentfilm,threeminutestouniimitedaudio,nowalsosupportszoomfilmandimagestabilizationfunction,w
3、hoisthemost:"digitalcamerawillbeinthenextthreeyearstoreplacedigitalcamera".Doesthatmakesense?Isthedigitalcamerareallytheyellowflowerofyesterday?Ithink,therelationshipbetweendigitalcameraanddigitalvideocamera,it'sliketherailwaytransportcanneverreplaceroadandairtransportation,duetotheirrespectiv
4、ehasuniqueadvantagesinthefield,althoughsimilarfunctionality,butitisimpossibletoreplaceeachother・ThecontradictiononthesensorTheworkingprincipleofadigitalcameraistoconvertopticalsignalsintoelectricalsignals,andusingthephotosensitiveareaoftheformimagesensor,thesensorofthephotosensitiveareautiliza
5、tionrateishigher,youcancapturemorelightsignal,thesensitivityisstronger,shootingoutofthepictureismoreclearandbright,itanddigitalcameraimagingprincipleofbasic,butoftenconsiderthecostofdigitalcamerasareequippedwithaCCDorCMOSsensorisareaissmall,aCCDatthesametimecompletetheluminanceandchrominancesi
6、gnalconversion,sounavoidablybesatisfactorytobothsides,maketheimagetakenoutincolorreductionreachestothelessthanprofessionalrequirements・Inordertosolvethisproblem,thereisa3CCDdigitalcamera,aftersuchaspeciallightthroughaprism,canbedividedintored,green,bluethreecolors,andthesethreekindsofcolorisof
7、threecolors,weuseTVthroughthethreeprimarycolors,includingluminancesignal,canproducealltelevisionsignals・Fromthepointofviewofcostcontrol,3CCDdigitalcameratobesignificantlyhigherthanthesingleCCDdigitalcamera,digitalcamerainordertogetthebe