ISO rhiab heev. yooj yim kev txawj ntse

Cov kev xav hais tias ISO rhiab heev yog, yog ib tug ntawm cov tub ntxhais. Nws yog tsim nyog los txawm lub novice kws yees duab, tsis muaj, ntawm chav kawm, tsis muaj nqi thiab kev.

Neeg ISO - yog ib qho kev ntsuas ntawm lub xaav ntawm ib matrix lub koob yees duab nws tau txais lub teeb. High ISO qib muab ib lub sij hawm mus rau noj nyob rau hauv cov duab tej kev kawm nrog neeg pluag teeb pom kev zoo. Cia li ob peb xyoos dhau los, lub ISO yog tsis cov yam ntxwv ntawm cov koob yees duab, thiab cov zaj duab xis nws tus kheej, thiab yuav tsum tau mus hloov lub zaj duab xis, xaiv lub feem ntau haum rau cov duab ob peb ntas nrog txawv muaj ntau seem ntawm lub teeb photography. Niaj hnub no, raws li ib tug kev lub koob yees duab (SLR thiab mirrorless) thiab pib xyaum ua (digital) muaj cov kev ua ntawm txhais tes thiab tsis siv neeg ISO rhiab heev tswj, uas ua rau nws tau ua kev txhaj tshuaj nrog txawv rhiab heev, cov ntaubntawv povthawj siv rau lawv nyob rau hauv tib lub cim xeeb card.

Thaum teeb pom kev zoo yog tsis txaus rau cov muab kev pom yog tsis ib txwm tau mus siv rau lwm (thiab nrog) flash. Nyob rau hauv xws li mob, koj yuav tsum hloov cov ISO rhiab heev rau ib tug ntau dua los yog cov tib txav rau nws automatic chaw.

Nyob rau hauv tas li ntawd, cov kev hloov ntawm lub Translation theem yuav pab yog hais tias koj tsis kom cov kev ceev thiab tsis tau siv ib lub kos. Nyob rau hauv cov ntaub ntawv no, siv cov siab ISO qhov tseem ceeb kom shutter ceev.

Txawm li cas los, nws yuav yooj yim heev yog hais tias tus tas mus li siv ntawm ntau dua ISO qhov tseem ceeb tsis muaj ib sab nyhuv. Tom qab tag nrho, rau qhov matrix koob yees duab yog tsim nyob rau hauv xws li ib tug txoj kev uas ib qho kev nce nyob rau hauv ISO rhiab heev yuav tsub kom. Thiab nyob rau hauv cov ntaub ntawv no nws yog tsau tsis tau tsuas yog ntau lub teeb, tab sis kuj yog li-hu ua suab nrov.

Nws nyiaj thiab lub sij ib tug ntau ntawm zoo qhov tseem ceeb ISO daws teeb meem matrix koob yees duab. Lub siab dua nws yog, qhov tsawg dua cov suab nrov theem txawm nyob rau hauv lub siab tshaj plaws ISO chaw. Cov koob yees duab (thiab "SLR" thiab "Xab npum") no matrix yog tsis tsawg tshaj li 2.3 "yog teev nyob rau hauv lub ntsiab.

Qhov no yuav tsum tau to taub los mus tiv thaiv ib tug ncaj ntau misconception zaum kuj tshwm sim nrog beginners: Tsis txhob xav hais tias qhov ntau megapixels nyob rau hauv lub koob yees duab, cov zoo nws yog. Cia li ib tus naj npawb loj heev ntawm megapixels tias ib txhia manufacturers yog ua rau cov koob yees duab rau hauv lub matrix, yuav txo tau qhov zoo tshaj ntawm cov dluab nyob rau hauv cov nqe lus ntawm qhov tshwm sim ntawm ntau cov suab nrov. Yog li ntawd tsis blindly ntseeg hais tias lub advertising.

Yog li, rau tua nyob rau cov nyiaj pab ntau tshaj ISO qhov tseem ceeb yuav ua tau tsuas yog thaum nws yog tsis txhaum:

• Yog hais tias muaj yog ib tug xaiv ntawm seb puas yuav ua ib daim duab nrog lub suab nrov los yog tsis tua.
• Yog hais tias lub shooting tej yam kev mob tsis tso cai rau cov kev siv cov flash.
• Yog hais tias koj npaj yuav sau tawm cov duab ntawm me me hom ntawv, nyob rau hauv uas lub suab nrov yog yuav luag tsis hnov li.
• Yog hais tias nws yog tau txo lub suab nrov theem los ntawm kev kho mob.

A shooting nyob rau hauv ib qho qhib qhov chaw ntawm txaus ambient teeb lub zoo xaiv - ISO rhiab heev yog tsim los ntawm ib tug tsawg kawg nkaus tus nqi. Hais tias yog dab tsi yuav tau txais qhov zoo tshaj plaws cov duab.