Ko ngā karāhe arotahi rerekē he momo karāhe e whakamahia whānuitia ana i roto i ngā kāmera pouaka whakaata porowhita kati (CCTV). Kāore i rite ki ngā karāhe arotahi pumau, he roa arotahi kua whakaritea i mua kāore e taea te whakarite, ka taea e ngā karāhe arotahi rerekē te whakarite i ngā roa arotahi i roto i te awhe kua tohua.
Ko te painga matua o ngā karāhe varifocal ko tōna ngāwari ki te whakarerekē i te tirohanga whānui (FOV) me te taumata whakanui o te kāmera. Mā te whakarerekē i te roa arotahi, ka taea e te karāhe te whakarerekē i te koki tirohanga me te whakanui ake, te whakanui ake rānei i ngā wā e hiahiatia ana.
He tino whai hua tēnei āhuatanga mō ngā tono tirotiro ina hiahia pea te kāmera ki te aroturuki i ngā wāhi rerekē, i ngā taonga rerekē rānei i ngā tawhiti rerekē.
Ngā karaihe rerekēe whakaahuatia ana mā te whakamahi i ngā tau e rua, pērā i te 2.8-12mm, te 5-50mm rānei. Ko te tau tuatahi e tohu ana i te roa arotahi poto rawa o te arotahi, e whakarato ana i te whānuitanga tirohanga whānui, ko te tau tuarua ia e tohu ana i te roa arotahi roa rawa atu, e āhei ai te whānuitanga tirohanga whaiti ake me te whakanui ake.
Mā te whakarerekē i te roa arotahi i roto i tēnei awhe, ka taea e koe te whakarite i te tirohanga a te kāmera kia rite ki ngā whakaritenga tirotiro motuhake.
Te roa o te arotahi o te arotahi varifocal
He mea tika kia mōhiotia ko te whakarerekētanga o te roa arotahi i runga i te arotahi varifocal me mahi ā-ringa, mā te huri ā-tinana i te mowhiti o te arotahi, mā te whakamahi rānei i tētahi tikanga miihini e whakahaerehia ana mai i tawhiti. Mā tēnei ka taea te whakarerekē i te wāhi kia rite ki ngā hiahia tirotiro hurihuri.
Ko te rerekētanga matua i waenga i ngā arotahi varifocal me ngā arotahi pūmau i roto i ngā kāmera CCTV kei roto i tō rātou kaha ki te whakarite i te roa arotahi me te whānuitanga tirohanga.
Roa Arotahi:
He roa arotahi motuhake tō ngā karāhe arotahi pumau, kāore e taea te whakarite. Ko te tikanga o tēnei, ina tāutahia, ka noho tonu te whānuitanga tirohanga me te taumata whakanui o te kāmera. I tētahi atu taha, he whānuitanga o ngā roa arotahi ka taea te whakarite e ngā karāhe arotahi rerekē, e āhei ai te whakarerekē i te whānuitanga tirohanga me te taumata whakanui o te kāmera ina hiahiatia.
Te Mara Tirohanga:
Ki te mea he arotahi pūmau, kua whakaritea te whānuitanga o te tirohanga, ā, kāore e taea te whakarerekē me te kore e whakakapia ā-tinana te arotahi.Ngā karaihe rerekē, i tētahi atu ringa, ka taea te whakarite ā-ringa i te arotahi kia whānui ake, kia whaiti ake rānei te tirohanga, i runga i ngā whakaritenga tirotiro.
Taumata Whakanui:
Kāore he āhuatanga whakanui o ngā karāhe arotahi pumau, nā te mea ka noho pūmau tonu te roa o te arotahi. Heoi, mā ngā karāhe arotahi rerekē ka taea te whakanui ake, te whakanui ake rānei mā te whakarerekē i te roa arotahi i roto i te awhe kua tohua. He whai hua tēnei āhuatanga ina hiahia koe ki te arotahi ki ngā taipitopito motuhake, ki ngā mea rānei i ngā tawhiti rerekē.
Ko te whiriwhiri i waenga i ngā karāhe rerekē me ngā karāhe pumau e whakawhirinaki ana ki ngā hiahia tirotiro motuhake o te tono. He pai ngā karāhe pumau ina he rawaka te whānuitanga tirohanga me te taumata whakanui pumau, ā, kāore he hiahia ki te whakarerekē i te tirohanga a te kāmera.
Ngā karaihe rerekēhe maha atu ngā whakamahinga, he whai hua ake hoki ina hiahiatia he ngāwari o te tirohanga me te whakanui, e taea ai te urutau ki ngā āhuatanga tirotiro rerekē.
Wā tuku: Akuhata-09-2023
