Kamera ya digito ya 20MP Resolution
Mu nthawi imene makamera ali paliponse, mawu akuti "megapixel" (MP) nthawi zambiri ndi njira yodziwira mtundu wa chithunzi. Anthu ambiri amaganiza kuti kuchuluka kwa megapixel kumakhala kwakukulu, chithunzi chimakhala chabwino. Komabe, zenizeni zimakhala zovuta kwambiri. Kuchuluka kwa 20MP (20 megapixel) pa kamera ya digito ndi njira yotchuka pakati: yayitali mokwanira kusindikiza, tsatanetsatane, ndi kudula, koma ikadali yeniyeni pa liwiro lokonza ndi kukula kwa mafayilo. Nkhaniyi ikufotokoza tanthauzo la 20MP, ubwino wake ndi zofooka zake, komanso nthawi yomwe kusinthasintha kumeneku kumamveka bwino.
Kodi 20MP ndi chiyani?
Megapixel ndi gawo loyezera kuchuluka kwa ma pixel pa sensa ya kamera. Megapixel imodzi imayimira ma pixel miliyoni imodzi. Chifukwa chake, kamera ya 20MP imatha kujambula zithunzi pafupifupi ma point 20 miliyoni pachithunzi chimodzi. Kuchuluka kwa chithunzi nthawi zambiri kumapangitsa kuti chithunzi chikhale ndi ma pixel pafupifupi 5472 × 3648 (ngakhale izi zitha kusiyana kutengera chiŵerengero cha sensa, monga 3:2 kapena 4:3). Izi zikutanthauza kuti chithunzicho chili ndi tsatanetsatane wokwanira wogwiritsidwa ntchito m'njira zosiyanasiyana, kuyambira pazolemba pa malo ochezera mpaka zolemba zazikulu.
Komabe, ndikofunikira kumvetsetsa kuti ma megapixel okha samatsimikizira mtundu wa chithunzi. Sensa, lenzi, kukonza zithunzi, kukula kwa ma pixel, ndi momwe zithunzi zimachitikira zimathandizanso kwambiri. Kamera ya 20MP yokhala ndi sensa yayikulu komanso lenzi yapamwamba imatha kupanga zithunzi zabwino kwambiri kuposa kamera ya 48MP pafoni yokhala ndi sensa yaying'ono komanso yokonzedwa mwachangu.
Ubwino Watsatanetsatane ndi Kuwala
Mwachidule, 20MP imapereka kulinganiza bwino kwa kuthwa ndi tsatanetsatane. Mutha kuwonera zithunzi pazenera, ndikuwona bwino mawonekedwe a zovala, masamba, kapena kapangidwe kake. Pa kujambula zithunzi za malo, maulendo, zolemba zochitika, ndi zithunzi, 20MP nthawi zambiri imakhala yokwanira.
Kuthwa komaliza kumakhudzidwabe ndi lenzi. Kamera ya 20MP yokhala ndi lenzi yodziwika bwino imapanga tsatanetsatane wabwino, koma ikaphatikizidwa ndi lenzi yapamwamba kwambiri (monga lenzi yaukadaulo kapena zoom), mphamvu ya 20MP resolution imatha kukulitsidwa. Kuphatikiza apo, njira zojambulira monga kugwiritsa ntchito liwiro lokwanira la shutter, kuyang'ana kolondola, ndi kukhazikika zimawonetsanso ngati tsatanetsatane wa 20MP ndi "wowoneka" kapena wotayika chifukwa cha kusokonekera.
Kusinthasintha kwa Kudula
Chifukwa chimodzi chomwe ojambula zithunzi ambiri amakondera kusinthasintha kwa 20MP ndi kusinthasintha komwe kumapereka podula zithunzi. Mwachitsanzo, mukajambula zithunzi zakuthengo kapena masewera, simungathe nthawi zonse kuyandikira nkhani yanu. Ndi 20MP, mutha kudula zithunzi mwamphamvu kwambiri uku mukusungabe kusinthasintha koyenera kuwonera pa digito kapena kusindikiza zithunzi zazing'ono mpaka zapakati.
Mwachidule, ngati mudula chithunzi pakati, mphamvu yake imatsikanso ndi theka. Kuchokera pa 20MP kufika pa 10MP, zomwe zimakhala zokwanira kugwiritsidwa ntchito pa intaneti komanso ngakhale zosindikizira zapakatikati. Mwanjira ina, 20MP imapereka "malo otetezeka" kwa inu omwe nthawi zambiri mumasintha zithunzi mukatha kujambula.
Kukula kwa Fayilo ndi Zofunikira Zosungira
Kukula kwake kumagwirizana mwachindunji ndi kukula kwa fayilo. Chithunzi cha 20MP mu mtundu wa JPEG nthawi zambiri chimakhala pakati pa 4–10 MB, kutengera kupsinjika ndi tsatanetsatane wa chithunzi. Pakadali pano, fayilo ya RAW imatha kufika 20–30 MB kapena kuposerapo, kutengera mtundu wa kamera ndi kuya kwa biti.
Izi zimakhudza zofunikira pa khadi la memory, mphamvu ya hard drive, komanso momwe zinthu zimagwirira ntchito. Poyerekeza ndi makamera a 40–60MP, makamera a 20MP nthawi zambiri amakhala abwino kugwiritsa ntchito. Kutumiza, kuwoneratu, ndikusintha pa laputopu yapakatikati nthawi zambiri kumakhala kosavuta. Kwa ojambula zithunzi omwe amajambula zithunzi mazana ambiri nthawi imodzi (monga paukwati kapena zochitika), kukula kwa mafayilo ang'onoang'ono kumasunga nthawi ndi malo osungira.
Kuchuluka kwa Kusindikiza: Kodi Kungasindikizidwe Kukulu Motani?
Chisankho cha 20MP ndi chokwanira bwino posindikiza. Chiyerekezo chodziwika bwino cha zosindikiza zapamwamba ndi 300 dpi (madontho pa inchi), ngakhale kuti kwa ma posters omwe amawonedwa patali, 150–200 dpi nthawi zambiri amakhala okwanira.
Ndi ma pixel 5472 × 3648, mutha kusindikiza mwachiphunzitso:
– Pafupifupi mainchesi 12 × 18 pa 300 dpi (yabwino kwambiri)
- Yokulirapo kwambiri pa 200 dpi, yoyenera kwambiri polemba kapena zowonetsera pakhoma
Mukugwiritsa ntchito tsiku ndi tsiku, 20MP imalola kusindikiza zithunzi za banja, ma portfolio, komanso zinthu zotsatsira popanda nkhawa. Ngakhale pazinthu zina zamalonda, 20MP imakhalabe muyezo wotetezeka, makamaka pamene kuwala ndi kuwombera kuli bwino.
Kukula kwa 20MP ndi Sensor: Kulumikizana Komwe Kawirikawiri Sikomveka Bwino
Kuchuluka kwa ma Megapixel nthawi zambiri kumaonedwa ngati chizindikiro chenicheni cha khalidwe la sensa, koma kukula kwa sensa n'kofunika kwambiri. Sensa ya 20MP full-frame nthawi zambiri imakhala ndi ma pixel akuluakulu kuposa sensa ya 20MP micro four-thirds kapena 1-inch (ngakhale nthawi zina sizimatengera kapangidwe kake). Ma pixel akuluakulu amakonda kujambula kuwala kwambiri, zomwe zimapangitsa kuti ISO igwire bwino ntchito komanso kuti ikhale ndi mphamvu zambiri.
Ichi ndichifukwa chake makamera a 20MP okhala ndi chimango chonse nthawi zambiri amakhala abwino kwambiri m'malo opanda kuwala kochepa, zomwe zimapangitsa kuti phokoso likhale lochepa komanso mthunzi ukhale wochepa. Ngakhale makamera a 20MP omwe ali ndi masensa ang'onoang'ono akadali abwino kwambiri, angafunike kuunikira bwino kwambiri kapena makonda olondola ochepetsera phokoso.
Kuthamanga Kwambiri: Kuphulika, Kuyang'ana Mwachangu, ndi Kanema
Kutsika kwa mphamvu kumapereka mwayi wothamanga. Makamera a 20MP, makamaka opanda magalasi kapena makamera a DSLR opangidwira kugwira ntchito, nthawi zambiri amatha kujambula zithunzi zokhala ndi mafelemu ambiri komanso ma buffer akuluakulu. Chifukwa fayilo iliyonse ndi yaying'ono kuposa kamera ya 30–60MP, kamera imatha kulemba deta ku khadi la memory mwachangu ndikusunga kuphulika kwa nthawi yayitali buffer isanadzaze.
Pa kanema, resolution ya 20MP ndiyonso yabwino, chifukwa kanema wa 4K amangofunika pafupifupi 8,3MP pa chimango chilichonse. Ndi sensa ya 20MP, kamera imatha kuchita zinthu zoyezera kapena kudula kuti ipange 4K yakuthwa. Makamera ambiri otchuka pamsika wa kujambula zithunzi kapena makanema osakanikirana amagwiritsa ntchito resolution iyi, chifukwa imaonedwa kuti ndi yofanana bwino ndi zosowa zonse ziwiri.
Malire a Kutsimikiza kwa 20MP
Ngakhale kuti imagwira ntchito zosiyanasiyana, 20MP ili ndi zofooka zake. Ngati nthawi zambiri mumajambula zikwangwani, zithunzi zazikulu kwambiri zokhala ndi zithunzi zapafupi, kapena mukufuna kudula kwambiri, kamera ya 30–60MP ingakhale yopindulitsa. Kujambula zinthu zina, kujambula zojambulajambula, kapena ntchito zamalonda zomwe zimafuna tsatanetsatane wazinthu zazing'ono nthawi zina zimakhala bwino ndi resolution yapamwamba.
Komabe, ndikofunikira kukumbukira kuti kuwonjezera ma megapixels kumafunanso kwambiri magalasi, njira, ndi kukhazikika. Kuchuluka kwa ma resolution kumapangitsa kuti zikhale zosavuta "kuulula" zolakwika: ngakhale kulephera kuyang'ana pang'ono, kusokoneza pang'ono komwe kumachitika chifukwa cha kugwirana chanza, kapena lenzi yosawala kwambiri idzawonekera bwino.
Kodi Kamera ya 20MP Ndi Yabwino Kwambiri Kwa Ndani?
Chisankho cha 20MP ndi choyenera pa:
1. Ojambula zithunzi omwe amakonda kwambiri omwe akufuna zithunzi zokongola popanda mafayilo akuluakulu.
2. Ojambula zithunzi za zochitika/ukwati omwe amajambula zithunzi zambiri ndipo amafunikira njira yofulumira yogwirira ntchito.
3. Okonda maulendo omwe akufuna tsatanetsatane wokwanira woti asindikize ndi kulemba zikalata.
4. Ojambula zithunzi za zochita ndi zinyama zakuthengo omwe amafunikira kujambulidwa mwachangu komanso kudula kokwanira.
5. Opanga zinthu zomwe zimagwiritsa ntchito zithunzi ndi makanema a 4K mu chipangizo chimodzi.
Kwa ogwiritsa ntchito ambiri, 20MP si "yokwanira" yokha, koma ndi yokwanira. Cholinga sichiyenera kukhala pa kuchuluka kwa ma megapixel okha, koma pa makina onse: khalidwe la lenzi, luso la autofocus, kukhazikika, ergonomics, ndi mtundu.
Mapeto
Kamera ya digito ya 20MP yokhala ndi resolution ya 20MP imapereka tsatanetsatane wabwino kwambiri, kusinthasintha, komanso magwiridwe antchito. Imalola kudula, imalola kusindikiza kwakukulu kwapamwamba, komanso imapangitsa kukula kwa mafayilo kukhala koyenera. Nthawi yomweyo, 20MP siyimaika mphamvu zambiri pa hardware ndi ntchito monga makamera okhala ndi resolution yapamwamba kwambiri.
Pomaliza, kamera yabwino kwambiri si yomwe ili ndi ma megapixel ambiri, koma yomwe ikugwirizana bwino ndi zosowa zanu. Ngati mukufuna zithunzi zakuthwa, luso losindikiza bwino, komanso njira yabwino yogwirira ntchito, kamera ya digito ya 20MP ndi chisankho chofunikira kwambiri—ngakhale pakati pa kuchuluka kwa ma megapixel komwe kukuchulukirachulukira.
