He momo CCTVocal he momo momo momo kāmera e taea ai mo te whakatikatika roa o te arotahi roa. Koinei te tikanga ka taea te whakatika i nga arotahi ki te whakarato i tetahi koki matatini rereke, ka taea e koe te whakauru atu ki te kaupapa ranei.
Ko nga arotahi rereke e whakamahia ana i roto i nga kamera haumaru na te mea ka whakawhiwhia e ratou te waatea o te tirohanga. Hei tauira, ki te hiahia koe ki te aroturuki i tetahi waahanga nui, ka taea e koe te whakanoho i te arotahi ki tetahi koki whanui hei hopu i etahi atu ahuatanga. Hei tauira, ki te hiahia koe ki te aro ki tetahi waahanga motuhake, ki te ahanoa ranei, ka taea e koe te whakauru ki te titiro tata.
Whakaritea ki nga arotahi pumau, kei a ia ano te roa, te roa o te arotahi totika, he nui ake nga ahuatanga o te arotahi mo te waahi kamera me te kapinga o te waahi. Heoi, he nui ake te utu i a raatau ake i nga arotahi pumau, me nui ake te whakatikatika me te whakamaoritanga kia pai ai te mahi.
Rite ki tewhakaputanga("TRUE" {TRUE "{Ka mau tonu ki te arotahi i te mea ko te arotahi o te arotahi (te roa o te arotahi me te roa o te arotahi ki te roa o te arotahi. Many so-called “zoom” lenses, particularly in the case of fixed-lens cameras, are actually varifocal lenses, which give lens designers more flexibility in optical design trade-offs (focal length range, maximum aperture, size, weight, cost) nui atu i te zoom parfocal.