Cov tsom iav tsom iav tau pom zoo los ntawm ntau tus kws yees duab vim lawv qhov aperture siab, duab zoo, thiab kev txav mus los.Covtsau tsom iav lensmuaj qhov ntev focal ntev, thiab nws cov qauv tsim tsom ntau dua ntawm kev ua haujlwm kho qhov muag hauv qhov tshwj xeeb focal ntau yam, ua rau cov duab zoo dua.

Yog li, kuv yuav siv lub lens ruaj khov li cas?Cia peb kawm txog cov lus qhia thiab kev ceev faj rau kev siv cov tsom iav tsom iav ua ke.

Tswv yim thiabpceeb toomfor uhu nkaujfua ixedfocus ualenses

Kev siv lub lens ruaj khov muaj cov txheej txheem, thiab los ntawm kev siv cov tswv yim no, ib tus tuaj yeem siv qhov zoo ntawm lub lens thiab thaij duab zoo:

1.Xaiv qhov tsim nyog focal ntev raws li qhov chaw tua

Lub focal ntev ntawm lub lens ruaj khov yog ruaj khov, yog li thaum siv nws, nws yog ib qho tsim nyog yuav tau xaiv lub focal ntev kom tsim nyog raws li qhov kev kawm thiab qhov deb ntawm kev txhaj tshuaj.

Piv txwv li, telephoto lo ntsiab muag tsim nyog rau kev tua cov neeg nyob deb, thaum lub lens dav yog tsim rau kev tua cov toj roob hauv pes loj;Thaum tua cov ntsiab lus nyob deb, nws yuav tsum tau mus ze lawv me ntsis, thiab thaum tua cov scenes loj dua, nws yuav tsum tau nqis rov qab qee qhov deb.

Lub lens ruaj khov

2.Ua tib zoo saib xyuas qhov tseeb ntawm phau ntawv tsom

Vim tsis muaj peev xwm ntawm covtsau tsom iav lenstxhawm rau kho qhov ntev focal ntev, tus kws yees duab yuav tsum tau kho lub koob yees duab kom pom tseeb kom paub meej tias cov ntsiab lus ntawm qhov kev txhaj tshuaj yog nyob rau hauv qhov pom tseeb.Kev hloov ntawm qhov tsom xam tuaj yeem ua tiav nrog kev siv tsis siv neeg lossis phau ntawv qhia kev ua haujlwm.

Qee qhov tsom iav tsom iav tsis tuaj yeem autofocus thiab tsuas yog txhawb nqa phau ntawv tsom.Nws yog ib qho tsim nyog yuav tsum tau xyaum thiab tsim kom muaj kev tsom ntsoov zoo thaum siv los xyuas kom meej thiab pom kev tua ntawm qhov kev kawm.

3.Ua tib zoo siv qhov zoo ntawm aperture loj

Cov tsom iav tsom iav feem ntau muaj qhov aperture loj dua, yog li lawv feem ntau yuav ntes cov duab meej thiab ci ntsa iab nyob rau hauv qhov chaw tsis muaj teeb pom kev zoo.

Thaum tua, qhov tob ntawm daim teb thiab tom qab qhov muag plooj tuaj yeem tswj tau los ntawm kev kho qhov aperture loj: lub aperture me me (xws li f/16) tuaj yeem ua kom tag nrho cov duab meej, thaum lub aperture loj (xws li f/2.8) tuaj yeem tsim ib qho qhov tob tob ntawm cov nyhuv teb, cais cov ntsiab lus los ntawm keeb kwm yav dhau.

4.Ua tib zoo mloog kom ntxaws muaj pes tsawg leeg

Vim yog qhov ntev focal ntev, siv lub lens ruaj khov tuaj yeem txhim kho kev txawj ntse, tso cai rau koj ua tib zoo xav txog kev teeb tsa ntawm cov ntsiab lus thiab kev qhia ntawm cov ntsiab lus hauv txhua daim duab.