Ngaba iiLensi zeMizi-mveliso zingasetyenziswa njengeeLensi zeSLR? Zeziphi iiParameters esifanele siziqwalasele xa sikhetha iiLensi zeMizi-mveliso?

1,Ngaba iilensi zemizi-mveliso zingasetyenziswa njengeelensi ze-SLR?

Uyilo kunye nokusetyenziswa kweiilensi zoshishinokunye neelensi ze-SLR zahlukile. Nangona zombini ziyilensi, indlela ezisebenza ngayo kunye neemeko ezisetyenziswa kuzo ziya kwahluka. Ukuba ukwindawo yemveliso yemizi-mveliso, kucetyiswa ukuba usebenzise iilensi ezikhethekileyo zemizi-mveliso; ukuba wenza umsebenzi wokufota, kucetyiswa ukuba usebenzise iilensi zekhamera zobungcali.

Iilensi zoshishino ziyilelwe ukugxila ekuchanekeni, ukuqina, kunye nokuzinza, ngokuyintloko ukuhlangabezana neemfuno zokuvelisa kunye nezinye izicelo zobungcali, ezifana nokusetyenziswa okuthile kwi-automation, ukujonga, uphando lwezonyango, nokunye.

Uyilo lweelensi ze-SLR lufuna ikakhulu ukuqwalasela ukusebenza kwe-optical, ukubonakaliswa kobugcisa kunye namava omsebenzisi, njl.njl., ukuze kuhlangatyezwane neemfuno zabafoti bomfanekiso womgangatho womfanekiso kunye nokusebenza okutsha.

Nangona kunokwenzeka ngokwetekhnoloji ukufaka ilensi yemizi-mveliso kwikhamera ye-SLR (ukuba ujongano luyahambelana), iziphumo zokudubula zisenokungabi zifanelekileyo. Iilensi zemizi-mveliso zisenokungaboneleli ngomgangatho okanye ukusebenza komfanekiso ongcono kakhulu, kwaye zisenokungasebenzi nenkqubo yekhamera yakho yokuziveza ngokuzenzekelayo okanye yokujolisa ngokuzenzekelayo.

Ikhamera ye-SLR

Kwiimfuno ezithile ezikhethekileyo zokufota, ezinje ngokufota ngemicroscope ekufutshane, kunokwenzeka ukufakaiilensi zoshishinokwiikhamera ze-SLR, kodwa oku ngokubanzi kufuna izixhobo zokuxhasa zobungcali kunye nolwazi lobungcali ukuxhasa ukugqitywa.

2,Ziziphi iiparameter ekufuneka siziqwalasele xa sikhetha iilensi zemizi-mveliso?

Xa ukhetha ilensi yemizi-mveliso, kufuneka uqwalasele iindidi ngeendidi zeeparameter. Ezi parameter zilandelayo zihlala zijongwa:

Ubude befokhalthi:

Ubude befocal bumisela intsimi yokujonga kunye nokukhulisa ilensi. Ubude befocal obude bubonelela ngokubukela kunye nokukhulisa umgama omde, ngelixa ubude befocal obufutshane bubonelela ngentsimi yokujonga ebanzi. Ngokuqhelekileyo kucetyiswa ukuba ukhethe ubude befocal obufanelekileyo ngokusekelwe kwiimfuno zeemeko ezithile zesicelo.

Imbobo:

Imbobo imisela ubungakanani bokukhanya okudluliswa yilensi kwaye ikwachaphazela ukucaca nobunzulu bomfanekiso. Imbobo ebanzi ivumela ukubonakala okungcono kunye nomgangatho womfanekiso kwiimeko zokukhanya okuphantsi. Ukuba ukukhanya kwendawo oyidubulayo kubuthathaka, kuyacetyiswa ukuba ukhethe ilensi enembobo enkulu.

Isisombululo:

Isisombululo selensi simisela iinkcukacha zomfanekiso enokuzibamba, kunye nesisombululo esiphezulu esibonelela ngemifanekiso ecacileyo neneenkcukacha ezingaphezulu. Ukuba unemfuno ephezulu yokucaca kwemifanekiso ebanjiweyo, kuyacetyiswa ukuba ukhethe ilensi enesisombululo esiphezulu.

Ilensi yemizi-mveliso

Umbono:

Intsimi yokujonga ibhekisa kuluhlu lwezinto ezinokugutyungelwa yilensi, ezidla ngokubonakaliswa ngee-engile ezithe tye nezithe nkqo. Ukukhetha intsimi yokujonga efanelekileyo kuqinisekisa ukuba ilensi iyakwazi ukubamba uluhlu lomfanekiso olufunekayo.

Uhlobo lojongano:

Uhlobo lojongano lwelensi kufuneka luhambelane nekhamera okanye izixhobo ezisetyenzisiweyo.ilensi yemizi-mvelisoIintlobo ze-interface ziquka i-C-mount, i-CS-mount, i-F-mount, njl.

Uphazanyiso:

Ukugqwethwa kubhekisa ekuguqulweni kwezinto okwenziwa yilensi xa ithatha umfanekiso wento kwi-element ethambileyo. Ngokubanzi, iilensi zemizi-mveliso zinemfuneko ephezulu yokugqwethwa. Ukukhetha ilensi enokugqwethwa okuphantsi kunokuqinisekisa ukuchaneka nokuchaneka komfanekiso.

Umgangatho welensi:

Umgangatho welensi uchaphazela ngokuthe ngqo ukucaca kunye nokuveliswa kombala komfanekiso. Xa ukhetha ilensi, kufuneka uqinisekise ukuba ukhetha uphawu kunye nomzekelo welensi ekumgangatho ophezulu.

Ezinye iimfuno ezikhethekileyo: Xa ukhetha iilensi zemizi-mveliso, kufuneka uqwalasele nokuba indawo esetyenziswa kuyo ineemfuno ezikhethekileyo zelensi, njengokuba ingaba ayinamanzi, ayingeni uthuli, kwaye ayimelani nobushushu obuphezulu.

Iingcinga Zokugqibela:

UChuangAn wenze uyilo lokuqala kunye nokuveliswa kweelensi zemizi-mveliso, ezisetyenziswa kuzo zonke iinkalo zezicelo zemizi-mveliso. Ukuba unomdla okanye uneemfunoiilensi zoshishino, nceda unxibelelane nathi ngokukhawuleza.