Lub xub ntiag ntawm lub lens hauv lub koob yees duab yog coj mus tso cai los ntawm peb. Thiab qhov no tsis yog qhov xav tsis thoob, ua li cas lub koob yees duab tsis muaj lub lens? Nws yog ib qho khoom siv ua haujlwm nyuaj. Hauv kev pom ntawm qhov no, txhawm rau kom ua tiav qhov kev sib tw siab zoo, koj yuav tsum xam kom raug lub lens.
Cov Lus Qhia
Kauj ruam 1
Xam lub lens raws nws cov nta kev. Niaj hnub no, muaj ntau yam ntawm lo ntsiab muag, ntawm cov uas feem ntau siv yog: fisheye, dav-lub kaum ntse ntse, whale, cov pa (ib txwm) lens, portrait lens, macro lens thiab telephoto lens.
Kauj ruam 2
Yog tias koj mloog zoo li riveted los ntawm lub ntsej muag fisheye, them sai sai rau lub peculiarity ntawm cov cuab yeej no. Cov lo ntsiab muag ntawm cov pab pawg no yog pom los ntawm qhov dav dav ntawm qhov kev pov hwm ntawm thaj chaw cov yeeb yaj kiab: qhov tseeb, cov cuab yeej no tawm ntawm kev sib tw ntawm kab pheeb ces kaum ntawm cov "cropped" thav duab. Ntawm cov neeg sawv cev ntawm pab pawg no muaj cov lenses nrog focal ntev ntawm 4,5 hli.
Kauj ruam 3
Ua tib zoo saib dav dav dav: nws lub kaum sab xis yog 90 degrees. Muaj tsuas yog ib qho tsis zoo hauv qhov sib piv nrog "ntses qhov muag" - saib lub kaum sab xis yog ib nrab ntawm qhov loj me, hom khoom siv no tsis cuam tshuam dab tsi rau daim duab. Tsis tas li ntawd, lub ntsej muag dav muag tau pom "nrawm" hauv daim duab, ua kom pom nws lub dav thaum tua cov khoom nyob ntawm qhov ze lossis ntawm lub kaum sab xis, ua kom yooj yim rau koj lub qhov muag kom pom tseeb.
Kauj ruam 4
Yog tias koj tau xaiv rau lub lens cov khoom siv, coj mus rau hauv tus account qhov tseeb tias ntawm kev ua haujlwm, cov khoom siv ntawm pawg no tsis yog qhov tsis zoo: lawv tuaj yeem siv los tua cov khoom sab hauv tsev thiab cov duab ib sab, rau qhov no koj tsuas xav tau kho lub ntsej muag sab nraud. Cov. Qhov sib luag ntawm lub ntsej muag ntev ntawm cov khoom siv hauv pawg no yog 50 millimeters. Hauv kev sib piv nrog cov khoom siv ntawm "whale" hom, "lenses" li qub muaj qhov qis dua EGF, yog li, lawv tau npaj rau feem kev cob qhia, thiab tsis yog rau kev yees duab.
Kauj ruam 5
Lub macro lens yog qhov tseem ceeb thaum kev thaij duab lub microcosm. Thaum ntaus cov cuab yeej hauv cov qeb no, xws li qhov ntsuas "tsawg tshaj qhov xav tau deb" yog siv: tus nqi ntawm qhov ntsuas no yuav tsum tsawg dua 5 centimeters. Nyob rau hauv sib piv ntawm no hom ntawm lub lens, telephoto lo ntsiab muag yog siv los ntes cov kev kawm ntawm deb.
Kauj Ruam 6
Ua tib zoo saib cov iav lo ntsiab muag. Lawv tuaj yeem paub qhov txawv ntawm lwm cov khoom siv los ntawm lawv cov nqi tshwj xeeb ntawm qhov sib npaug ntawm qhov ntev focal. Rau cov ntawv lo ntsiab muag, qhov ntsuas no sib txawv li ntawm 85-120 hli.
