Fahimtar Buffering a Digital Photography
Lokacin da ka danna maɓallin rufewa kuma ka ɗauki hoto, hoton ba kawai kawai ya ƙare akan katin ƙwaƙwalwar ba. Kyakkyawar kamara, ko alamace tabarau mai mahimmanci, wani mai kula da lambobi maras kyau , ko DSLR, dole ne ta shiga jerin matakai kafin a ajiye hotunan a katin ƙwaƙwalwa. Ɗaya daga cikin maɓalli na ɓangaren adana hoto a kan kyamarar dijital shine buffer hoto.
Tasirin ajiyar hoto ta kyamara yana da mahimmanci don sanin aikin aiki na kowane kyamara, musamman ma lokacin da kake yin amfani da yanayin har abada. Don ƙarin koyo game da buffer kyamara da kuma yadda za a sa mafi yawanta a cikin sharuddan inganta aikin kyamararka, ci gaba da karantawa!
Kula da Bayanan Hotuna
Lokacin da kake rikodin hoton tare da kyamara na dijital, mai gane firikwensin hoto ya fallasa haske, kuma na'urar firikwensin yayi la'akari da hasken da yake buga kowane pixel a firikwensin. Wani firikwensin hoto yana da miliyoyin pixels (wuraren hotunan hoton hoto) - kyamara 20 megapixel ya ƙunshi masu karɓa na hoto 20 na hoto.
Hakanan mahimmanci yana ƙayyade launin launi da ƙarfin hasken da yake buga kowane pixel. Mai sarrafa hoto a cikin kyamara ya canza haske zuwa bayanan dijital, wanda shine saitin lambobin da kwamfutar zasu iya amfani da su don ƙirƙirar hoto akan allon nuni. Ana sarrafa wannan bayanan a cikin kamara kuma an rubuta shi zuwa katin ajiya. Bayanin da ke cikin fayil ɗin hoto yana kama da kowane nau'in komfutar da kake son gani, kamar fayilolin sarrafawa ko rubutu.
Matsar da Data Fast
Don taimakawa gudunmawar wannan tsari, DSLRs da sauran kyamarori na dijital sun ƙunshi bugun kyamara (kunshe da ƙwaƙwalwar ajiyar ƙira, ko RAM), wanda ke riƙe da bayanai bayan lokaci kafin hardware na kyamara ya rubuta shi zuwa katin ƙwaƙwalwa. Babban hoton hotunan kyamara yana ba da izini don adana hotuna da za a adana a wannan wuri na wucin gadi, yayin jiran jiran rubutawa zuwa katin ƙwaƙwalwa.
Dabaru daban-daban da katin ƙwaƙwalwar ajiya daban-daban suna da hanyoyi daban-daban, wanda ke nufin za su iya share buffer kamara a hanyoyi daban-daban. Sabili da haka yana da ɗakunan ajiya mafi girma a cikin kyamara na kyamara, ba don damar adana karin hotuna a wannan yanki, wanda zai samar da mafi kyau yayin yin amfani da yanayin harbi (wanda ake kira fashewa). Wannan yanayin yana nufin karfin kyamarar daukar hoto da sauri bayan juna. Yawan hotuna da za a iya ɗauka a lokaci ɗaya ya dogara da girman girman buƙurin kamara.
Duk da yake kamfanonin da ba su da tsada sun ƙunshi ƙananan wuraren buffer, mafi yawan lokutan DSLR na zamani sun ƙunshi manyan buffers wanda ke ba ka damar harbi yayin da aka sarrafa bayanai a bango. Original DSLRs bai ƙunshi buffers ba, kuma dole ne ku jira kowane harbi da za a sarrafa kafin ku iya harba sake!
Yanayin Hoton Hoton
Abun bugun kamara zai iya kasancewa ko dai bayan ko bayan bayanan hoto.
- Kafin Ayyukan Hotuna Buffer. Ana sanya RAW bayanai daga firikwensin kai tsaye cikin buffer. Ana sarrafa bayanai sannan an rubuta shi zuwa katin ajiya tare da wasu ayyuka. A cikin kyamara tare da irin wannan buffer, har yanzu ba za a ƙara karuwa ba ta rage girman fayil din.
- Bayan Bayanan Hotuna Buffer. An sarrafa hotuna kuma sun juya cikin tsari na karshe kafin a sanya su a cikin buffer. Saboda wannan, adadin hotuna da aka ɗauka a cikin yanayin harbi yana iya ƙara ta hanyar rage girman fayil ɗin fayil.
Wasu DSLRs suna amfani da buffering "Smart" yanzu. Wannan hanya ta hada abubuwa na gaba kafin da bayan buffers. An ajiye fayilolin da ba a kula ba a cikin buffer kyamara don ba da izinin mafi girma "lambobi na biyu" (fps). An kuma sarrafa su a cikin tsari na karshe kuma aka mayar da su zuwa buffer. Bayanan fayiloli za a iya rubutawa ga katunan ajiya a lokaci guda yayin da ake sarrafa hotunan, don haka ya hana gilashi.