Yintoni i-lens egxininisekileyo?

Njengoko igama libonisa, ailensi yokugxila esisigxinaluhlobo lwelensi yokufota enobude obugxininisiweyo obusisigxina, obungenakulungiswa kwaye buhambelana ne-zoom lens.

Xa sithetha ngokuthelekisa, iilensi zojoliso ezizinzileyo zihlala zinendawo yokuvula enkudlwana kunye nomgangatho ophezulu wokukhanya, nto leyo ezenza zilungele ukuthatha iifoto ezikumgangatho ophezulu.

Umahluko phakathi kweelensi zokugxila ezisisigxina kunye neelensi zoom

I-lens yokugxila egxininisekileyo kunye ne-zoom lens zimbini iintlobo eziqhelekileyo zeelensi zekhamera, kwaye umahluko wabo ophambili ulele ekubeni ubude bengqwalasela buyahlengahlengiswa. Zinenzuzo yazo xa zisetyenziswa kwiimeko ezahlukeneyo zesicelo.

Umzekelo, ilensi yogxininiso esisigxina ikulungele ukusetyenziswa kwiimeko zokukhanya okwaneleyo, ukufuna umgangatho womfanekiso ophezulu, kunye nemixholo yokudubula ezinzileyo, ngelixa i-zoom lens ifaneleke ngakumbi imiboniso efuna ukusondeza okuguquguqukayo, okufana nokufota kwezemidlalo.

Ilensi yogxininiso esisigxina

Ubude bojoliso

Ubude obugxininise be-lens egxininisekileyo bugxininisekile, njenge-50mm, 85mm, njl., kwaye ayikwazi ukulungiswa. I-zoom lens inokulungelelanisa ubude obugxilwe ngokujikeleza okanye ukutyhala kunye nokutsala umgqomo welensi, ivumela ukhetho oluguquguqukayo phakathi kwe-engile ebanzi kunye ne-telephoto.

Oukusebenza kwe-ptical

Ngokubanzi, ailensi yokugxila esisigxinainomgangatho we-optical ongcono kune-zoom lens ngenxa yokuba uyilo lwayo lulula kwaye alufuni ukuqwalaselwa kwentshukumo yelensi okanye izakhiwo ezintsonkothileyo zamehlo. Xa sithetha ngokuthelekisa, iilensi zojoliso ezizinzileyo zihlala zinendawo yokuvula ephezulu (enexabiso elincinane lika-F), elinokubonelela ngomgangatho ongcono womfanekiso, ukukhanya okukhulu, kunye neziphumo ezingcono zokumfiliba ngasemva.

Kodwa ngoku ngophuhliso lwetekhnoloji, ezinye iilensi zokusondeza ezikumgangatho ophezulu zinokufikelela kwinqanaba lelensi zokugxila ezigxininisiweyo ngokwemigaqo yokusebenza kwe-optical.

Ubunzima kunye nomthamo

Ulwakhiwo lwelensi yogxininiso oluzinzileyo lulula, ngokuqhelekileyo luncinci kwaye lukhaphukhaphu ngobukhulu. Ulwakhiwo lwelensi yokusondeza luntsonkothile, luqulathe iilensi ezininzi, ngoko luhlala lunzima kwaye lukhulu, olusenokungabi lula kakhulu ukuba lusetyenziswe ngabafoti.

Indlela yokudubula

Ilensi yogxininiso ezinzileyos zilungele ukudubula izigcawu ezithile okanye izifundo, njengoko ubude bogxininiso bungenakulungiswa, kwaye iilensi ezifanelekileyo kufuneka zikhethwe ngokusekelwe kumgama wokudubula.

I-zoom lens iyaguquguquka kwaye inokulungelelanisa ubude bengqwalasela ngokweemfuno zokudubula ngaphandle kokutshintsha indawo yokudubula. Ifanelekile kwimiboniso efuna utshintsho oluguquguqukayo kumgama wokudubula kunye ne-angle.