Buyela ku-Basics Photography: Ukuvezwa Kokuthinteka Kwe-F-Stop Kanjani

Buyela ku-Basics Photography: Ukuvezwa Kokuthinteka Kwe-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. Lo ngumbhalo wesihlanu kulolu chungechunge. UJohn uyisivakashi esivamile e I-MCP Facebook Community Group. Qiniseka ukuthi ujoyina - kumahhala futhi kunemininingwane eminingi kakhulu.

Esihlokweni sethu sokugcina sibheka ukuthi i-F-Stop iyithinta kanjani i-DOF. Ngalesi sikhathi sizobheka ukuthi i-F-Stop ikuthinta kanjani ukuvezwa.

Imbobo ukuvulwa lapho ukukhanya kudlula khona kusendleleni eya enzwa. Imiphumela ye-F-Stop inani lokukhanya elingena kwikhamera nakwifayela lakho le- ukujula kwensimu.

Ukukhethwa kwe-F-Stop kungashintsha ukubukeka kwesithombe ngokulawula ukuthi isithombe sigxile kangakanani. I-F-Stop futhi ilawula inani lokukhanya lapho kufinyelela khona inzwa. Lokhu kungenxa yokusebenzisa okubanzi noma okuncanyana kokuvula.

• Ukukhanya okwengeziwe kuyakwazi ukufaka ikhamera uma imbobo ibanzi kakhulu (1.4 noma 2.8).
• Uma imbobo in emincane (11 noma 16), ukukhanya okuncane kuyakwazi ukudlula ekuvulekeni okuncane.

Ngakho… I-F-Stop inemiqulu emibili lapho kudalwa izithombe zakho. Leyo yingxenye edidayo kubantu abaningi. Ngizozama ukukucacisa lokhu.

Yikuphi ongakusebenzisa f-stop for:ukuvezwa noma ukujula kwensimu:

Imvamisa, ngikhetha ukuvula ngokuya ngokujula kwensimu kunesibani sokukhanya esidingekayo. Lokhu ngikwenza ngenxa yezizathu ezimbili.

1. Ngingaguqula ukuvezwa nenani lokukhanya nge-ISO kanye / noma isivinini se-shutter.
2. Ukujula kwensimu oyikhethayo kukuvumela ukuthi ushintshe ukubukeka, umuzwa nemizwa yesithombe.

Imvamisa ngibeka i-F-Stop yami ye-DOF engiyifunayo. Uma ngenza umsebenzi we-portrait epaki, ngingahle ngifune ukuthi ingemuva lingacaci. Kuleso simo ngikhetha ukuvula okubanzi noma inombolo ephansi ye-F-Stop, i-F4 noma i-2.8 ngokunokwenzeka, kunginikeza i-DOF engajulile, lapho ingemuva lizoba khona. Uma ngithwebula isithombe esihle, ngizohamba nokuvula okuncane noma ukuphakama okukhulu kwe-F-Stop, kunginike i-DOF enkulu lapho isithombe esithile sizogxila khona.

Ngakho-ke yikuphi okungcono: i-DOF engajulile noma i-DOF enkulu?

I-DOF ingaba ngaphezulu kokuncamelayo. I-DOF ezithombeni zakho izoncika ekutheni uthanda ukwethula kanjani izithombe zakho. Ungahle uthande isizinda sakho ukuthi sithambe noma siphume kancane ekugxileni noma ungathanda isizinda sakho sicijile, sigxile ngokuphelele. Yilapho udinga ukwenza khona ukulungiswa kuwe ukuze uveze i-DOF oyifunayo.

Ngiyethemba njengoba sisebenza kulezi zihloko, uthola isibambo esingcono kulawulo lokuchayeka. Okulandelayo sizobheka iShutter Speed ​​nemiphumela yako ekulawuleni ukuvezwa. Kusisiqephu esisodwa nje esididiyelayo esisigcwalisa ndawonye.