Loaʻa i kahi meaʻike kiʻi kiʻi ma mua o ka helu o nā pika.
ʻO ka meaʻike kiʻi i kahi camcorder (a iʻole kamepiula pūnaewele) ka mea e hoʻokomo i ka "digital" i loko o ka camcorder maʻamau. Ma keʻano maʻalahi, e hoʻololi ka meaʻikepili kiʻi i kaʻike iʻikeʻia e ka leka o kāu kamepiula a hoʻololi iā ia i hōʻailona maʻamau. Hoʻomaʻinaʻia kēia māmāʻili a mālamaʻia i loko o ka hoʻomanaʻo o kāu kamepika ma ke kelepona wikiō e hiki iāʻoe ke nānā hou aʻe ma kāu kamepiula a iʻole ke kelepona. Ma kaʻaoʻao o ka lens pono'ī,ʻo ka meaʻike kiʻi kiʻi ka mea nui e mālama pono i ka wikiō maikaʻi.
ʻEluaʻano nui o nā meaʻike kiʻi kiʻi camcet : CCD (pū kī i hoʻohuiʻia) a me CMOS (ke kumuhana palekana hoʻohui kila). Aia nāʻanoʻokoʻa o kaʻenehanaʻike kiʻiʻelua i nā haneli haneli a mau miliona mau pika. E noʻonoʻo i kahi pixel e like me kahi keke liʻiliʻi e lawe i ka mālamalama a hoʻololi iā ia i hōʻailona pono.
Peheaʻo CMOS & amp; Kālepa CCD Ma kahi'ē aʻe
I kahi meaʻikepili CCD, pihi ka pixels i ka lama a neʻe ia i ka lihi o ka puhi kahi i hoʻololiʻia ai i hōʻailona maʻamau. I loko o kahi pūnaewele CMOS, ua hoʻololiʻia ke kukui ma ka pixel iho -ʻaʻole pono e hāʻawiʻia ka belmoku e pono ai. E pili ana kēia mahele liʻiliʻi: no ka meaʻaʻole pono e laweʻia ka hōʻailona māmā i ka lihi o ka puʻupuʻu no ka hoʻololiʻana,ʻo ka meaʻike SOSOS kahi pono e hoʻoholo i ka mana. ʻO keʻano,ʻo nā mea a pau e like ana,ʻo kahi camcorder me kahi pūnaewele CMOS e hāʻawi aku i kahi ola pihaʻoi aʻe ma mua o hoʻokahi me ka CCD. ʻOiaʻiʻo,ʻaʻohe aneane likeʻole nā mea, no laila,ʻaʻole e lawe wale i kahi kamepiula CMOS iʻoi aku ka maikaʻi o ke ola puulu ma mua o kahi kūlana CCD.
No nā makahiki he nui, ua manaʻoʻia nāʻikepili kiʻi CCD i kaʻenehana loea e pili ana i ke kiʻi a me kaʻike video. Eia naʻe, ua hana nui nā pūnaewele CMOS i kēlāʻoihana a ua loaʻa nei i ka piʻi nui o nā camcorders ma nā kumu kūʻai. I kēia manawa, e hoʻohana neiʻo Sony i kahi pūnaewele CMOS ma ka lākiō ho'ākāka kiʻekiʻe loa,ʻo ka HDR-XR520V.
No laila, i ka likeʻole o nā meaʻike kiʻi CMOS a me CCD,ʻaʻole lākou e hana pēlā i kahi ala kūpono no ka mea kūʻai aku. Ponoʻoe e hoʻolohe i keʻano o ka meaʻike i kāu kamepiula a nui aʻe ka nānā i ka helu pika a me ka nui o ka meaʻike.
Pixel Counts
I ka nānāʻana i nā kikowaena kamepika, eʻike pinepineʻoe iʻelua papa helu i heluʻia e ka meaʻike: kahi helu pixel nui a me ka helu pika maikaʻi. ʻO ka helu helu nui e pili ana i ka helu helu o nā pika ma ka meaʻike, akā e'ōlelo pono iāʻoe i ka nui o nā pixels e hoʻohanaʻia i ka wā e lawe ai i nā wikiō a iʻole nā kiʻi. No laila, e hoʻolohe i ka helu pika maikaʻi inā eʻimi ana i ka hoʻoholo o kāu wikiō.
He mea nui ka helu pixel maikaʻi no kekahi kumu'ē aʻe: kōkua iāʻoe e hoʻokaʻawale i kahi paipai kūʻai kūʻai. E kiʻi iā Camcorder A. Ua'ōleloʻo ia hiki iā ia ke lawe i kahi kiʻi 10-megapixel (ʻo ia hoʻi he kiʻi me 10 miliona pixels ma ia mea). Akā ināʻikeʻoe i ka helu o nā pixona maikaʻi ma kona pūnaeho kiʻi,ʻikeʻoe he 4-megapixel keleo wale nō. Pehea kahi kiʻi 4-megapixel kiʻi kiʻi kiʻi 10-megapixel kiʻi? Hanaʻia ia ma o ka hana i kapaʻia he interpolation. Ma keʻano he kaulike, ponoʻoe e hoʻokuʻu i ka maikaʻi o nā kiʻi i hanaʻia ma o interpolation. Ma kahi kūpono, e hoʻohana i ka helu o nā pika maikaʻi ma ka pūnaewele o ke kamera e like me ke alakaʻi i ka hoʻoholo maoli o kāu mau kiʻi.
Ka Nui o ka Nui Sensor Size
ʻO ka helu o nā pixels ma kahi meaʻike kiʻi kiʻi,ʻaʻole ia ka mea i hoʻohālikelike i ka maikaʻi o ka wikiō i laweʻia. ʻO ka nui o ka nui o ka meaʻike. Hiki i nā meaʻike kiʻi nui ke kiʻi i ka māmā o ka māmā ma mua o nā mea liʻiliʻi,ʻoiai inā he mau pika ka liʻiliʻi. No ka mea, i ka nui o ka helu, ua nui kēia mau pixel a hiki i ke kiʻiʻana i ka mālamalama hou aku.
ʻO kēia ke kumu eʻike aiʻoe i nā camcorders e hoʻolahaʻole wale i ka helu o nā pika ma kahi kiʻi kiʻi kiʻi, akāʻo ka nui o ka mea kani (ʻo ia mau manawa he mau'īniha). Uaʻoi aku ka maikaʻi ma ka kūʻaiʻana i kahi camcorder me kahi meaʻike kiʻi nui keʻole he emi iho nā pixels ma mua o ke kūlana hoʻolālā me kahi kiʻi liʻiliʻi a me nā pika keu.