Varifocal mandala: mphamvu ndi zofooka

Varifocal mandala - ndi mandala ndi variable Utali pamanja. Zipangizo za mtundu uwu ntchito makamera (okonzeka ndi magalasi yekha wa mtundu uwu) ndi makamera (yomwe ikhoza kukhala amodzi Utali kapena variable). Varifocal mandala zikuphatikizapo limodzi dongosolo kuwala amene zigawo umakaniko anasamukira wachibale wina ndi mzake, umene umatulutsa yosalala kusintha (kolowera) wa mtunda mogwirizana ndi moyenera, mu mawonekedwe osiyanasiyana amayesetsa focal. Komabe, sharpness ya bokosibode chinthucho ndi kabowo musati zosiyanasiyana.

Varifocal mandala ndi pamanja chosinthika Utali amalola kusintha kawiri, zomwe zimathandiza kuti kusintha kamera ngodya pa chithunzi mulingo woyenera. Zipangizo ndi mphamvu yakutali akhoza kusintha kutalika focal nthawi 6 mpaka 50. magalasi amenewa ntchito anaziika.

Tiyeni kumvetsa, ndipo kodi ubwino ndi kuipa kwa chipangizo monga varifocal mandala.

Ubwino chipangizo n'chakuti amalola kusintha ngodya pa malopo, pamene khazikitsa kamera. Ndipo, ndithudi, pambuyo unsembe wa kamera akhoza kusintha kutalika focal. Kumapeto kwa zipangizo ngati ulemu. Tsopano tiyeni tione kuipa.

Kamera ndi mandala variofokalnym amafunikira malo kuti si nthawi zonse yabwino popeza muli ndi zonse tinyamule zida owonjezera (mayeso polojekiti, batire, etc.). Mandala kusintha ali m'malo ovuta kumvetsa, m'pofunika kudziwa chiŵerengero mulingo woyenera kwambiri kutalika mogwirizana ndi sharpness ndi ndondomeko ikuchitika ndi zosefera wapadera (mtengo ndithu), amene samveka chithunzi. Choncho, drawback choyamba - ndi malo ovuta.

Varifocal mandala ali ndi mphamvu poipa (kabowo chiŵerengero) poyerekeza ndi magalasi zonse. Izi makamaka noticeable zosiyana zipangizo (5-50), chithunzi khalidwe adzakhala amanyansidwa ndi madzulo. Low kabowo - ndi drawback chachiwiri.

A lachitatu drawback varifocal mandala ndi kuti m'kupita kwa nthawi amatha defocus ku mavuto makina kapena matenthedwe. Chifukwa, miyezi ingapo Pakufunika kasinthidwe zina.

A drawback yachinayi mtengo wa mandala, ndi mmene mtengo kuposa lokhazikika.

Kuti adzimvera, zimene varifocal magalasi, ngakhale zolakwa zake, ndi otchuka kwambiri ndipo anthu ambiri amafuna kwambiri kuposa lokhazikika. Komabe, Dziwani kuti review anapatsidwa m'nkhani ino amangonena za makamera anaikira anaziika, chifukwa iwo okha ndi kusankha magalasi lokhazikika kapena chosinthika. The makamera ndi makamera kunyumba kanema ntchito Optics yekha chosinthika.