Rov qab mus rau Kev Qhia Duab Duab: Dab tsi yog NRES COJ?

Rov qab mus rau Kev Qhia Duab Duab: Dab tsi yog NRES COJ?

Lub hlis yuav los no John J. Pacetti, CPP, AFP, yuav tau sau cov qauv kawm kev thaij duab.  Yuav kom nrhiav tau lawv tsuas yog tshawb “Rov qab mus rau Basics”Rau ntawm peb qhov blog. Nov yog xya qhov hauv nqe lus no. John yog tus qhua nquag mus rau MCP Facebook Zej Zog PawgCov. Nco ntsoov koom nrog - nws yog pub dawb thiab muaj cov ntaub ntawv zoo heev.

Dab tsi yog "nres ntawm lub teeb" thiab vim li cas kuv yuav tsum paub qhov no?

Peb tau saib dhau los ntawm ISO, F-Nres thiab Tsoo Xeem Ceev. Peb saib yuav ua li cas txhua tus muaj ib qho ntxim rau hauv daim duab peb sab raugCov. Muaj ib yam ntxiv uas kuv xav kov.

Kuv paub tseeb tias koj tau hnov ​​cov lus “nres ntawm lub teeb.” Ib qho nres ntawm lub teeb yog qhov sib txawv hauv cov nyiaj ntawm lub teeb uas mus txog lub sensor ntawm F-nres.

Ib F-Stop:

Yog tias koj tsiv los ntawm F4 rau F5.6 koj txo qis lub teeb kom ncav lub sensor los ntawm 1 F-Nres. Nco ntsoov, qhov ntau dua F tus naj npawb me me qhib qhov aperture. Txhua zaus koj nce ib qho F-Nres koj tab tom txiav tus nqi lub teeb kom ncav lub sensor hauv ib nrab. Qhov rov qab yog qhov tseeb. Nco ntsoov, qis dua F cov naj npawb ntawm qhov qhib ntawm qhov ntau dua. Txhua zaus koj txav tawm ib qho F-Nres koj nce lub teeb pom kev nce mus txog qhov ntsuas lub cev, ua ob lub teeb ntxiv.

Nres nrog ISO:

Koj cov ISO ua haujlwm hauv qhov zoo sib xws. Txhua qhov txav nce los yog nqis hauv ISO chaw teeb tsa yog qhov nce lossis qis dua hauv lub teeb sib npaug ib qho nres ntawm lub teeb. Piv txwv li: 100 txog 200 yog ib lub teeb nres. 200 txog 400 yog ib qho nres ntawm lub teeb. 400 rau 800, ib qho nres, 800 rau 1600, ib qho nres. Yog li, yog tias koj tsiv los ntawm ISO 100 rau ISO 400, koj nce koj kis los ntawm ob lub chaw nres tsheb. (100 txog 200 ces 200 txog 400).

Nres nrog Shutter Ceev:

Koj Shutter Speed ​​ua haujlwm tib yam li qub. Txhua qhov hloov ntawm Shutter nrawm yog sib npaug ntawm lub teeb nres. Piv txwv li: 1/30 txog rau 1/60 yog ib qho nres. 1/15 txog 1/30 yog ib qho tsum. 1/30 txog 1/60 yog ib qho chaw nres. 1/60 txog 1/125 yog ib qho tsum. 1/125 txog 1/250 ib qho chaw nres tsheb, 1/250 txog 1/500 qhov chaw nres ib. Yog tias koj nce koj Shutter Speed ​​koj nyob ntev txiav lub teeb mus txog lub sensor los ntawm ib qho. Yog tias koj txo qhov SS koj tab tom ua lub sijhawm lub teeb mus txog lub koob yees duab sensor ntawm ib qho chaw nres ib.

Muaj cov lej ua kev koom tes hauv txhua qhov no. Koj tsis tas yuav tsum paub txog ntawd, tsuas yog paub tias txhua qhov kev txav ntawm ib qho ntawm peb ntu ntawm cov duab peb sab yog raug nres teeb, ib qho ntxiv lossis txo qis.

Txhua qhov kev hloov pauv ntawm ib qho ntawm peb qho raug lees paub los ntawm kev hloov pauv yam tsawg kawg ntawm ib ntawm ob qho. Nco ntsoov, suav cov kev hloov nres.

• * Ib nres nres hloov hauv ISO yuav tsum muaj ib qho kev hloov pauv ib qho hauv SS lossis FStop los tswj kom muaj kev sib kis.
• * Ib nres nres hloov rau hauv SS yuav tsum tau nres ib qho hauv ISO lossis FStop kom muaj kev sib kis zoo ib yam.
• * Ib nres nres hloov hauv F-Nres yuav tsum muaj ib qho nres hloov ib qho hauv SS lossis ISO los tswj kev ua kom zoo li qub.

Ntawm no yog ib qho piv txwv:

Tsis meej pem? Kuv cia siab tsis. Peb tshooj tom ntej yuav khi qhov no tag nrho rau koj.

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

Xyoo 2013 Tus qhia hauv MARS Tsev Kawm Ntawv- Kev Yees Duab 101, Cov Hauv Paus ntawm Kev Yees Duab  www.marschool.com

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