Koma zuwa Hoto na asali: A cikin zurfin Duba ISO

Komawa zuwa Hoto na asali: An zurfafa Duba ISO

A cikin watanni masu zuwa John J. Pacetti, CPP, AFP, za su rubuta jerin darussan daukar hoto na asali.  Don nemo su duka kawai bincika “Back to Basics”A shafinmu. Wannan ita ce kasida ta uku a cikin wannan jerin. John baƙo ne mai yawa ga Pungiyar Community Community ta MCP. Tabbatar shiga - kyauta ne kuma yana da cikakkun bayanai.

A cikin kasidarmu ta karshe na baku damar kallon alwatiran murabba'i. Wannan lokacin zamuyi zurfin bincike ne da ISO.

ISO shine ƙwarewar firikwensin. Firikwensin ya tattara haske. Haske akan firikwensin shine yake ƙirƙirar hotonku. Ananan lambar ISO ana buƙatar ƙarin haske don ƙirƙirar hoto, shimfidar wurare masu haske. Mafi girman lambar ISO ƙarancin haske ake buƙata don ƙirƙirar hoto, al'amuran duhu.

Sanin abin da ISO yake bayyana a ciki, ra'ayina, mafi kuskuren fahimta game da ɓangarorin uku na triangle mai bayyanawa. Idan kuna fuskantar matsala game da wannan, ba ku kadai ba. Baya a ranar fim, yawancin mutane sun zaɓi saurin fim 100 ko 400. An umurce ku da ku yi amfani da 100 don waje da 400 a cikin gida. Wannan har yanzu gaskiya ne. Kyamarorin dijital na yau, duk da haka suna ba mu mafi girman kewayon ISO fiye da fim da aka taɓa yi. Yawancin kyamarar dijital za su ba ka kewayon 100 zuwa 3200 kuma mafi girma. Wasu daga cikin sabbin kyamarori suna zuwa kamar 102400.

ISO shine abin da galibi nake saitawa yayin tantance saitunan fallasawa. Anan ga wasu yanayin.

• Yayinda nake aiki a waje, misali, wurin shakatawa tare da bikin amare ko zaman hoto, taron shiga ko taron dangi, bana bukatan babban ISO. Zan yi amfani da 100. Lokaci daya kawai da zan zaba 200 shine idan ya wuce karfin simintin gyare-gyare ko kuma kusan magariba inda zan iya buƙatar ɗan ƙaramin haske don isa ga kyakkyawan yanayin.
• Yanzu, idan ina aiki a cikin yanayi mara ƙanƙanci, misali, cocin da ba ya izinin ɗaukar walƙiya, zan zaɓi ISO na 800, 1600, mai yuwuwa 2500. Ina buƙatar ƙarar firikwensin ta kasance mafi girma. Sensarfin firikwensin firikwensin zai ba ni damar riƙe F-Stop da SS ɗin da nake so su ƙirƙiri kyakkyawar fitina a wannan yanayin hasken.
• Bari mu ce ina so in yi aiki tare da wadatar taga. Hasken taga ya bazu (don mafi yawan) hasken rana. Zan tafi tare da 400 mai yuwuwa 800 idan haske bai isa sosai ba kamar ranar girgije. Sake, saita F-Stop da SS sau ɗaya inada ISO na.

Rean sake bayani: Yi amfani da ƙananan ISO a cikin yanayin haske mai haske (100). A cikin yanayin ƙananan haske, yi amfani da babbar ISO (400, 800, 1600). Da zarar ka yanke shawara akan ISO, zaka iya fiye saita SS da F-Stop naka.

Ina fatan wannan zai baku kyakkyawan ra'ayi game da yadda ISO ke aiki da kuma yadda ake amfani da ISO don amfanin ku. Ilimi shine mabudi. Da zarar kun sami wannan ilimin, babu abin da zai dakatar da aikin daukar hoto mai kayatarwa. Ilimi baya karewa, babu wani mutum da ya san komai.

Nan gaba zamu kalli F-Stop.

John J. Pacetti, CPP, AFP - Kudu Street Studios     www.southstreetstudios.com

Malami na 2013 a Makarantar MARS- Hoto na 101, Tushen Hoto  www.marschool.com

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