luv TTL, luv focal ntev, lub kaum sab xis loj, loj aperture ntse tsev kho qhov muag lens.Lub tsev ntse nkag mus tswj lub kaum sab xis dav paub txog cov duab nrhiav tau ntawm cov txuas tseem ceeb hauv lub tsev ntse.
Lub lens dav no tso cai rau koj pom qhov peb xav pom nrog thaj chaw loj ntawm kev pom thiab lub lens zoo.Nws yuav tsum yog koj qhov kev xaiv zoo tshaj plaws.Professional optical lens chaw tsim tshuaj paus.Tau txais cov ntsiab lus ntxiv thiab xaj tam sim no!