Rau cov tsev neeg thiab kev lag luam, Ping An muaj txiaj ntsig tshwj xeeb, thiab cov koob yees duab soj ntsuam tau ntsib peb cov kev xav tau kev nyab xeeb.
Thaum peb saib rau lub koob yees duab soj ntsuam peb xav tau, peb yuav xav kom nws pheej yig thiab zoo, thiab peb kuj xav kom nws muaj qhov zoo nkauj dua, tsis yog tsuas yog cov duab meej xwb, tab sis kuj rau qhov nruj.
Kuv tuaj yeem nrhiav tau lub koob yees duab saib xyuas kev ua haujlwm zoo li cas ntawm tus nqi tsim nyog?
Tam sim no, thev naus laus zis ntawm kev soj ntsuam lub koob yees duab yog qhov paub tab heev. Nyob rau hauv kev xaiv ntawm cov branded thiab tsis-branded soj ntsuam koob yees duab, qhov zoo ntawm ob yog yuav luag tib yam, tab sis tus nqi sib txawv heev vim hais tias ntawm kev tshaj tawm thiab cov nqi zog. Qhia luv luv txog kev yuav lub koob yees duab soj ntsuam.
1. Cov tsos ntawm lub lens tseem ceeb heev. Raws li qhov ntev focal ntev, nws tuaj yeem muab faib ua peb hom: lub lens qauv, lub lens ntev focal ntev, thiab luv focal ntev lens. Hauv kev xaiv lub lens, qhov kim dua qhov zoo dua, tab sis qhov kev xav tau dav dav, xws li: lub lens daws teeb meem, aperture, thiab cov duab loj ntawm lub lens yuav tsum ua raws li qhov loj ntawm lub koob yees duab' s CCD hom phiaj nto. Qee zaum lub lens zoo yuav tsis muaj txiaj ntsig zoo!
