Zoom lens hauv lub koob yees duab yog dab tsi?

2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47

A zoom lens yog ib tug mechanical los ua ke ntawm lens cov ntsiab lus uas lub focal ntev (thiab yog li lub kaum sab xis ntawm kev pom) tuaj yeem sib txawv, tsis zoo li qhov ntev focal ntev (FFL) lens (saib prime lens ). Ib qhov tseeb zoom lens , kuj hu ua parfocal lens , yog ib qho uas tswj kom pom tseeb thaum nws qhov ntev focal hloov..

Ib yam li ntawd, lub lens zoom yog dab tsi?

Ntau yam. Ib qho ntawm qhov zoo tshaj plaws ntawm kev siv a zoom lens yog tias nws tso cai rau koj hloov focal lengths tsis hloov koj lens . A zoom lens muab ntau qhov sib txawv ntawm focal lengths uas tuaj yeem hloov kho siv cov zoom nplhaib ntawm lub lens , qhov ntau nyob ntawm qhov lens qauv.

Dab tsi yog qhov txawv ntawm telephoto lens thiab zoom lens? Telephoto , roughly, txhais tau tias tus lens muaj qhov nqaim ntawm qhov pom, yog li nws tuaj yeem siv los saib cov khoom ntxiv mus. Telephoto lo ntsiab muag tuaj yeem yog zoom los yog prime. Zoom txhais tau hais tias lawv tuaj yeem hloov pauv mus deb npaum li cas lawv tab tom saib lossis tseem ceeb txhais tau tias lawv muaj qhov ruaj khov ntawm qhov loj thiab tsis tuaj yeem hloov pauv.

Ib tug kuj yuav nug, dab tsi yog zoom ntawm lub koob yees duab?

Zooming ntawm koj cov digital koob yees duab koom nrog kev pom ze dua ntawm cov ncauj lus nyob deb. Ib qho optical zoom yog qhov tseeb zoom lens, zoo li zoom lens koj yuav siv ona zaj duab xis koob yees duab . Lawv tsim cov duab zoo dua. Digital zoom : Ib txhia koob yees duab muab cov digital zoom , uas tsuas yog qee qhov hauv- koob yees duab ua duab.

Zoom ntsuas hauv lub lens li cas?

Kho qhov muag Zoom Focal ntev yog qhov kev ncua deb ntawm qhov nruab nrab ntawm qhov lens thiab cov duab sensor. Los ntawm tsiv lub lens deb ntawm cov duab sensor hauv lub koob yees duab lub cev, lub zoom nce vim qhov me me ntawm qhov xwm txheej ntaus cov duab sensor, uas ua rau muaj qhov loj.