Umabonakude wesekethe evaliweyo (CCTV), ekwabizwa ngokuba lucupho lwevidiyo, isetyenziselwa ukuhambisa imiqondiso yevidiyo kwiimonitha ezikude.Akukho mahluko ukhethekileyo phakathi kokusebenza kwelensi yekhamera emileyo kunye nelensi yekhamera yeCCTV.Iilensi zekhamera yeCCTV zinokulungiswa okanye zitshintshe, ngokuxhomekeke kwiinkcukacha ezifunekayo, ezinjengobude befocal, i-aperture, i-engile yokujonga, ukufakela okanye ezinye iimpawu ezinjalo.Xa kuthelekiswa nekhamera yekhamera yendabuko ekwazi ukulawula ukuvezwa ngesantya se-shutter kunye nokuvulwa kwe-iris, i-lens ye-CCTV inexesha elichanekileyo lokubonisa, kwaye ubungakanani bokukhanya obudlulayo kwisixhobo sokucinga kulungiswa kuphela ngokuvula iris.Imiba emibini ephambili ekufuneka iqwalaselwe xa ukhetha iilensi bubude obuchaziweyo bomsebenzisi kunye nohlobo lolawulo lwe-iris.Iindlela ezahlukeneyo zokuxhoma zisetyenziselwa ukunyusela ilensi ukugcina ukuchaneka komgangatho wevidiyo.
Ziya zisanda iikhamera zeCCTV ezisetyenziselwa ukhuseleko kunye neenjongo zokubeka iliso, ezinempembelelo entle ekukhuleni kwemarike yelensi yeCCTV.Kwiminyaka embalwa edlulileyo, kuye kwakho ukunyuka kwemfuno yamva nje yeekhamera zeCCTV njengoko ii-arhente ezilawulayo zenze imithetho esisinyanzelo yokufakelwa kweekhamera zeCCTV kwiivenkile zokuthengisa, iiyunithi zokuvelisa kunye namanye amashishini athe nkqo ukugcina iliso ubusuku nemini kunye nokuphepha imisebenzi engekho mthethweni. .Ngokunyuka kweenkxalabo zokhuseleko malunga nokufakelwa kweekhamera zikamabonwakude ezivaliweyo kwizixhobo zekhaya, ukufakelwa kweekhamera zikamabonwakude ezivaliweyo nako kuye kwanda kakhulu.Nangona kunjalo, ukukhula kwemarike ye-CCTV lens kuxhomekeke kwizithintelo ezahlukeneyo, kubandakanya umda wokujonga.Akunakwenzeka ukuchaza ubude bengqwalasela kunye nokuvezwa okufana neekhamera zemveli.Ukuthunyelwa kweekhamera zeCCTV kusetyenziswe kakhulu eUnited States, eBritane, eTshayina, eJapan, eMzantsi Asia nakweminye imimandla emikhulu, nto leyo izise iimpawu zokukhula okungenelelayo kwimakethi yelensi yeCCTV.
