一,WisigqokoLi-en isetshenziswa ku-CCTVCi-amera?
Amakhamera e-CCTV angasebenzisa izinhlobo ezahlukene zamalensi kuye ngokuthi asebenza kanjani kanye nendawo yokubuka ayifisayo. Nazi ezinye izinhlobo ezijwayelekile zamalensi asetshenziswa kumakhamera we-CCTV:
Ilensi Elungisiwe: Lawa malensi anobude obugxilile obugxilile futhi awakwazi ukulungiswa. Asetshenziselwa izinhlelo zokusebenza lapho inkambu yokubuka ingadingi ukushintshwa.
I-Varifocal Lens: Lawa ma-lens avumela umsebenzisi ukuthi alungise ubude bokugxila futhi ngaleyo ndlela inkambu yokubuka. Ziwusizo uma ikhamera ifakwe endaweni lapho ibanga phakathi kwekhamera nesihloko lingahluka.
Ilensi yokusondeza: Lawa ma-lens afana namalensi e-varifocal kodwa anikeza ububanzi obuningi bokulungiswa kobude bokugxila. Zivumela umsebenzisi ukuthi ahlehlise isithombe noma ahlehlise esihlokweni ngaphandle kokunyakazisa ikhamera.
I-Pinhole Lens: Lawa ma-lens anembobo encane kakhulu, evumela ikhamera ukuthi ifihlwe ngaphakathi kwento encane noma umgodi wodonga.
Ukukhethwa kwelensi kuncike ezidingweni ezithile zohlelo lokusebenza, njengebanga lesihloko, izimo zokukhanyisa, kanye nendawo yokubuka oyifunayo.
二,WisigqokoDoesI-CCTVCimeraLenDo?
Ilensi ingenye yezingxenye ezibaluleke kakhulu zekhamera ye-CCTV, njengoba inesibopho sokuthwebula nokugxilisa ukukhanya kunzwa yesithombe sekhamera. Ilensi inquma inkambu yokubuka kanye nenani lokukhanya elingena kukhamera, okungaba nomthelela omkhulu kukhwalithi nokucaca kwesithombe esiwumphumela.
Ilensi isebenza ngokugoba imisebe yokukhanya edlula kuyo, ngakho ihlangana endaweni egxile kuyo inzwa yesithombe. Ibanga ukusuka ku-lens ukuya kwinzwa yesithombe, kanye nokugoba kwelensi, kunquma ubude bokugxila kanye ne-engeli yokubuka yekhamera.
Ilensi yekhamera ye-CCTV ingalungiswa noma ishintshe, kuye ngezidingo ezithile zohlelo lokusebenza. Amalensi angashintshi anobude obugxilile obumisiwe kanye nenkundla yokubuka, kuyilapho amalensi alungisekayo, njengamalensi e-varifocal noma ama-zoom, angalungiswa ukuze kushintshwe ubude bokugxila kanye nenkundla yokubuka.
Kafushane, ilensi yekhamera ye-CCTV idlala indima ebalulekile ekuthwebuleni izithombe zekhwalithi ephezulu nevidiyo. Ngokulawula inani lokukhanya elingena kukhamera kanye ne-engeli yokubuka, ilensi isiza ukuqinisekisa ukuthi ikhamera ithwebula isihloko esihlosiwe ngezinga elifiswayo lemininingwane nokucaca.
三,Kwenziwa kanjaniCfaka i-CCTVCimeraLyini?
Ukukhetha ilensi yekhamera ye-CCTV efanele kubalulekile ukuze uthole ikhwalithi yesithombe engcono kakhulu yohlelo lwakho lokuvikela. Nazi ezinye izici okufanele zicatshangelwe lapho ukhetha i-aIlensi yeCCTV:
Ubude bokugxila: Ubude bokugxila belensi bunquma indawo yokubuka yekhamera, noma ukuthi ingakanani indawo ikhamera engathwebula. Uma udinga ukuqapha indawo enkulu, i-lens ene-engeli ebanzi enobude obufushane bokugxila kuyodingeka. Ukuze kuqashwe indawo ethile, ilensi ye-engeli encane enobude bokugxila ende ifaneleka kakhulu. Ungasebenzisa izibali eziku-inthanethi ukuze unqume ubude bokugxila obufanele bohlelo lwakho lokusebenza ngokusekelwe ebangeni lesihloko kanye nendawo yokubuka oyifunayo.
Imbobo: Imbobo ingusayizi wembobo kwilensi evumela ukukhanya ukuthi kungene kukhamera. Imbobo enkulu (inombolo engu-f ephansi) izovumela ukukhanya okwengeziwe ukuthi kungene kukhamera, okuholela ezithombeni ezikhanyayo ezimeni zokukhanya okuphansi. Nokho, imbobo enkulu ingase ibangele ukushona okungashoni kwenkambu, okungabangela izinto ezingaphambili noma ingemuva ukuthi ibonakale ilufifi.
Ukuhambisana: Qinisekisa ukuthi ilensi iyahambisana nemodeli yekhamera yakho nosayizi wenzwa. Amakhamera ahlukene angase abe nezinhlobo ezihlukene zokukhweza, futhi akuwona wonke amalensi ahambisana nawo wonke amamodeli amakhamera.
Ikhwalithi Yesithombe: Khetha ilensi enekhwalithi enhle yesithombe, ezoqinisekisa ukuthi ikhamera ithwebula izithombe ezicacile, ezinemininingwane.
Isabelomali: Izindleko zeamalensi ekhamera yokuphephakuyahlukahluka kuye ngobude bokugxila, indawo yokuvula, nekhwalithi yesithombe. Nquma ibhajethi yakho bese ukhetha ilensi ehlangabezana nezidingo zakho futhi engena ngaphakathi kwesabelomali sakho.
Kafushane, lapho ukhetha ilensi yekhamera ye-CCTV, cabangela ubude bokugxila, indawo yokuvula, ukuhambisana, ikhwalithi yesithombe, kanye nesabelomali ukuze uqinisekise ukuthi uthola ikhwalithi yesithombe engcono kakhulu yesistimu yakho yokuphepha.
Isikhathi sokuthumela: May-05-2023
