Ngaba iiLensi zoShishino zingasetyenziswa njengeeLensi zeSLR?Zeziphi iiparamitha ekufuneka sithathele ingqalelo kuzo xa sikhetha iilensi zemizi-mveliso?

1,Ngaba iilensi zamashishini zingasetyenziswa njengeelensi ze-SLR?

Uyilo kunye nokusetyenziswa kweiilensi zamashishinikunye neelensi ze-SLR zahlukile.Nangona zombini iilensi, indlela ezisebenza ngayo kunye neemeko ezisetyenziswa kuzo ziya kwahluka.Ukuba uhlala kwindawo yokuvelisa imveliso, kucetyiswa ukuba usebenzise iilensi ezikhethekileyo zoshishino;ukuba wenza umsebenzi wokufota, kuyacetyiswa ukuba usebenzise iilensi zekhamera yobuchwephesha.

Iilensi zoshishino ziyilwe ngokuqwalasela ukuchaneka, ukuqina, kunye nokuzinza, ngokukodwa ukuhlangabezana neemfuno zokuvelisa kunye nezinye izicelo zobungcali, ezifana nokusetyenziswa okuthe ngqo kwi-automation, ukubeka iliso, uphando lwezonyango, kunye nokunye.

Uyilo lweelensi ze-SLR kufuneka ikakhulu luthathele ingqalelo ukusebenza kwamehlo, ukubonakaliswa kobugcisa kunye namava omsebenzisi, njl.njl., ukuze kuhlangatyezwane neemfuno zabafoti kumgangatho wemifanekiso kunye nokusebenza okutsha.

Nangona kunokwenzeka ngokobuchule ukufaka ilensi yeshishini kwikhamera ye-SLR (ngokubonelelwa ngojongano oluhambelanayo), iziphumo zokudubula zisenokungalungeli.Iilensi zemizi-mveliso zisenokunganikeli ngowona mgangatho ubalaseleyo womfanekiso okanye ukusebenza, kwaye zisenokungasebenzi nokuvezwa kwekhamera yakho ngokuzenzekela okanye inkqubo yokugxila ngokuzenzekelayo.

Ikhamera ye-SLR

Ngeemfuno ezikhethekileyo zokufota, ezifana ne-close-range microscopic photography, kunokwenzeka ukufakaiilensi zamashishinikwiikhamera ze-SLR, kodwa oku kufuna ngokubanzi izixhobo ezixhasayo kunye nolwazi lobuchwephesha ukuxhasa ukugqitywa.

2,Zeziphi iiparamitha ekufuneka siziqwalasele xa sikhetha iilensi zamashishini?

Xa ukhetha i-lens yoshishino, kufuneka uqwalasele iiparitha ezahlukeneyo.Ezi parameters zilandelayo ziyingqwalasela ngokubanzi:

Ubude bojoliso:

Ubude bojoliso bumisela indawo yokujonga kunye nokwandiswa kwelensi.Ubude bokujongwa okude bubonelela ngoluhlu olude lokujongwa kunye nolwandiso, ngelixa ubude obufutshane bogxininiso bubonelela ngommandla obanzi wokujonga.Kucetyiswa ngokubanzi ukuba ukhethe ubude bojoliso obufanelekileyo ngokusekwe kwiimfuno zeemeko ezithile zesicelo.

Umngxuma wokuvula:

Imbobo imisela ubungakanani bokukhanya okuhanjiswa ngelensi kwaye ikwachaphazela ukucaca nobunzulu bomfanekiso.I-aperture ebanzi ivumela ukuvezwa okungcono kunye nomgangatho womfanekiso kwiimeko zokukhanya okuphantsi.Ukuba ukukhanya kwendawo odubula kuyo kubuthathaka, kuyacetyiswa ukuba ukhethe i-lens ene-aperture enkulu.

Isigqibo:

Isisombululo selensi simisela iinkcukacha zomfanekiso enokuthi sizibambe, kunye nezigqibo eziphezulu ezibonelela ngemifanekiso ecacileyo, eneenkcukacha ezithe chatha.Ukuba uneemfuno eziphezulu zokucaca kwemifanekiso ethathiweyo, kuyacetyiswa ukuba ukhethe i-lens ephezulu-resolution.

Ilensi yoshishino

Indawo yokujonga:

Indawo yokujonga ibhekisa kuluhlu lwezinto ezinokugqunywa ilensi, ngokuqhelekileyo zibonakaliswa ngee-engile ezithe tye nezithe nkqo.Ukukhetha indawo efanelekileyo yokujonga iqinisekisa ukuba ilensi inokubamba uluhlu olufunekayo lomfanekiso.

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Uhlobo lojongano lwelensi kufuneka luhambelane nekhamera okanye izixhobo ezisetyenzisiweyo.Eqhelekileyoilensi yoshishinoiintlobo zojongano ziquka i-C-mount, i-CS-mount, i-F-mount, njl.

Uphazanyiso:

I-Distortion ibhekiselele kwi-deformation eyaziswa yi-lens xa ifanekisela into kwi-photosensitive element.Ngokubanzi, iilensi zamashishini zineemfuno eziphezulu zokugqwetheka.Ukukhetha i-lens ngokuphazamiseka okuphantsi kunokuqinisekisa ukuchaneka kunye nokuchaneka komfanekiso.

Umgangatho weLens:

Umgangatho weLens uchaphazela ngokuthe ngqo ukucaca kunye nokuveliswa kombala komfanekiso.Xa ukhetha i-lens, kufuneka uqinisekise ukuba ukhetha uphawu oluphezulu lwelensi kunye nemodeli.

Ezinye iimfuno ezikhethekileyo: Xa ukhetha iilensi zemizi-mveliso, kufuneka uqwalasele ukuba indawo esetyenziswa kuyo ineemfuno ezikhethekileyo zelensi, njengokuba ayinamanzi, ayinathuli, kwaye iyamelana nobushushu obuphezulu.

Iingcamango zokugqibela:

UChuangAn uye waqhuba uyilo lokuqala kunye nokuveliswa kweelensi zemizi-mveliso, ezisetyenziswa kuzo zonke iinkalo zokusetyenziswa kwezoshishino.Ukuba unomdla okanye unezidingo zeiilensi zamashishini, nceda uqhagamshelane nathi ngokukhawuleza.