Buyela ku-Basics Photography: Ukusebenzisana phakathi kwe-ISO, Speed ​​ne-F-Stop

Buyela ku-Basics Photography: Ukusebenzisana phakathi kwe-ISO, iShutter Speed ​​ne-F-Stop

Ezinyangeni ezizayo uJohn J. Pacetti, i-CPP, i-AFP, uzobe ebhala uchungechunge lwezifundo eziyisisekelo zokuthatha izithombe.  Ukubathola bonke vele useshe “Buyela kuzinsisekelo”Kubhulogi lethu. Lesi ngumbhalo wesibili kulolu chungechunge. UJohn uyisivakashi esivamile e I-MCP Facebook Community Group. Qiniseka ukuthi ujoyina - kumahhala futhi kunemininingwane eminingi kakhulu.

Esihlokweni sethu sokugcina ngikunikeze umbono ojwayelekile wokuthi i- unxantathu wokuchayeka usebenza ndawonye. Ngalesi sikhathi sizongena ngokuningiliziwe kulokho kuhlangana.

Okokuqala imininingwane ethe xaxa ezintweni ezintathu zokuvezwa;

ISO ukuzwela kwenzwa. Inzwa iqoqa ukukhanya. Ukukhanya kwenzwa yikhona okwenza isithombe sakho. Ukwehla kwenombolo ye-ISO kuyadingeka kakhulu ukukhanya ukudala isithombe, izigcawu ezikhanyayo. Ukuphakama kwenombolo ye-ISO ukukhanya okuncane kuyadingeka ukwenza isithombe, izigcawu ezimnyama.

Ijubane lokushesha isikhathi lapho i-shutter ivulekile ivumela ukukhanya ukuthi kushaye inzwa. Isivinini se-shutter sihamba kancane (1/15, 1/30) ukukhanya okude okushaya inzwa. Ngokushesha isivinini se-shutter (1/125, 1/250) isibani esifushane sishaya inzwa.

F-Misa ukuvulwa kwembobo. Ukuvulwa kokukhanya kudlula endleleni eya enzwa. I-F-Stop ilawula inani lokukhanya elifinyelela kunzwa nokujula kwensimu (DOF). I-DOF yindawo yokugxila okujwayelekile kwesithombe. Ukwehla kwenombolo engu-F (1.4, 2.8) kubanzi ukuvula, i-DOF ayijulile. Ukuphakama kwenombolo ye-F (8, 11) lapho kuncipha ukuvula, kukhula i-DOF.

Manje njengoba usuyazi ukuthi ngayinye yalezi zinto yenzani ngenkathi idala isithombe, ake sibheke indlela yokunquma izilungiselelo zakho zokuvezwa.

Ungazinquma kanjani izilungiselelo zakho zokuvezwa: Enye indlela yokwenza lokhu.

Engikukhethayo ukunquma nge-ISO yami kuqala. Njengoba i-ISO ingukuzwela kwenzwa ekukhanyeni, ezigcawini ezikhanyayo, njengangaphandle kwelanga, olwandle noma epaki ngingakhetha i-ISO ephansi, eyi-100. Uma kungusuku olugubuzelwe cishe u-200. Asikho isizathu ube ku-ISO ephakeme ezindaweni zokukhanya kwasemini. Kungahle kube khona okuhlukile. Njengomthetho ojwayelekile u-100 noma u-200 kufanele enze kahle ngaphandle ezimweni eziningi. Kuzilungiselelo zokukhanya okuphansi, kusihlwa, kusihlwa okusondelayo, ngingakhetha ama-400, mhlawumbe angama-800, kuya ngenani lokukhanya okutholakalayo. Ngaphakathi endlini ngingahle ngikhethe u-400 nge-flash mhlawumbe engu-800 uma ngifuna ukubona ukukhanya kwegumbi, mhlawumbe okungu-1600, noma ngaphezulu uma ngisebenza ngokukhanya okutholakalayo, njengasesontweni elingavumeli ukuthwebula izithombe.

Lapho sengikhethe i-ISO yami, ngithatha isinqumo ngeDepth of Field (DOF) engiyifunayo. Ngabe ngifuna i-DOF engajulile, (F-2.8, 4.0) noma i-DOF ejulile (F-11 noma ngaphezulu). Lapho sengisithathile leso sinqumo engidinga ukukwenza ukusetha i-Shutter Speed ​​yami ngokususelwa kulezo zilungiselelo ezimbili, i-F-Stop ne-ISO yami. Lapho sengisethe i-Shutter Speed ​​yami, ngizokwenza izithombe ezimbalwa zokuhlola ukuqinisekisa ukuthi ukuvezwa kwami ​​kulungile, uma kungenjalo, ngizokwenza ukulungisa okuncane ukuthola ukutholakala okuhle.

Ngiyethemba ukuthi lokhu kuzokunikeza ukubukeka okujule ngokwengeziwe kunxantathu wethu wokuchayeka. Phuma uzilolonge. Thola isibambo esihle sokuthi unxantathu wokuchayeka usebenza kanjani. Kwenze lokho futhi uzoba usendleleni yokwakha izithombe ezinhle ezingadingi ukulungiswa, ukuhlela nje okuthile ngobuciko. Njengoba izindatshana zethu ziqhubeka, sizongena ngemininingwane ngonxantathu wokuchayeka.

UJohn J. Pacetti, CPP, AFP - iSouth Street Studios     www.southstreetstudios.com

Umfundisi we-2013 eMars School- Photography 101, i-Basics of Photography  www.marschool.com

Uma unombuzo, zizwe ukhululekile ukuxhumana nami ku [i-imeyili ivikelwe]. Le imeyili iya ocingweni lwami ukuze ngikwazi ukuphendula ngokushesha. Ngingajabula ukusiza nganoma iyiphi indlela engingasiza ngayo.