EFL BFL FFL kunye FBL

I-EFL (Ubude beFocal obusebenzayo), obubhekiselele kubude befocal obusebenzayo, buchazwa njengomgama osuka kumbindi welensi ukuya kwindawo ekugxilwe kuyo. Kuyilo lwe-optical design, ubude befocal buhlelwa ngokobude becala lomfanekiso kunye nobude becala-nto leyo. Ngokukodwa, i-EFL ibhekiselele kubude becala lomfanekiso, okt, umgama osuka kwinqwelo-moya eyintloko yecala lomfanekiso ukuya kwindawo ekugxilwe kuyo kwicala lomfanekiso. Njengenye yeeparamitha ezibalulekileyo kuyilo lwenkqubo ye-optical, i-EFL ichaphazela kakhulu ukusebenza kwenkqubo. Ubude obugxininisiweyo obufutshane kakhulu bunokubangela ummandla obanzi ngokugqithisileyo we-engile yokujonga, ekhokelela ekugqwetheni okunzulu kunye nemingeni ekulawuleni i-engile yokuphuma ye-ray eyinhloko. Ngokuchaseneyo, ubude bojoliso bude ngokugqithisileyo bunokuthintela uyilo lwesixokelelwano esibambeneyo kwaye lusilele ukuhlangabezana neemfuno zesicelo esibonakalayo ngenxa yommandla omxinwa kakhulu wokujonga.

I-BFL (Ubude beFocal Focal), okanye ubude obugxininise ngasemva, buchazwa njengomgama osuka kwindawo yangasemva yelensi yokugqibela kwinkqubo yokukhanya ukuya kwinqwelomoya yomfanekiso. Njengeparameter ephambili kwi-design optical, i-BFL ichaphazela ngokuthe ngqo ubude benkqubo yonke kunye nokuchaneka kobude obungasemva. Ke ngoko, kufuneka iqwalaselwe ngononophelo ngexesha loyilo lwenkqubo.

I-FFL (Ubude beFocal Length), okanye ubude befocal yangaphambili, imele umgama ukusuka kumphezulu ongaphambili welensi yokuqala kwinkqubo yokukhanya ukuya kumphezulu wento. Kubalulekile ukuqaphela ukuba i-FFL yohluke kakhulu kwi-FBL (Ubude beFlange Focal Length). Eyangaphambili ibonisa umgama obonakalayo, ngelixa le yokugqibela ibhekisa kumgama womatshini.

I-FBL (I-Flange Focal Length), okanye ubude be-flange ekugxilwe kuyo, ichazwa njengomgama ukusuka kwindawo yokugqibela yomatshini ukuya kumphezulu womfanekiso weqela le-lens. Kuyilo lwekhamera kunye ne-lens interfaces, i-FBL yipharamitha ebalulekileyo emisela indawo echanekileyo apho ilensi ifakwe kwikhamera.

Isishwankathelo, ezi parameters ziyimfuneko kuyilo lweelensi zamehlo. Aziphembeleli ngokuthe ngqo kuphela ukusebenza kwelensi kunye nomgangatho wokucinga kodwa zikwachaphazela ngokunzulu ukuba nokwenzeka koyilo lwenkqubo.