Amapharamitha ayinhloko welensi yokuskena Ulayini ahlanganisa izinkomba ezilandelayo ezibalulekile:
Isixazululo
Ukulungiswa kuyipharamitha ebalulekile yokuhlola ikhono lelensi lokuthwebula imininingwane yesithombe esihle, ngokuvamile esivezwa ngamapheya emigqa ngemilimitha (lp/mm). Amalensi anokulungiswa okuphezulu angaveza imiphumela ecacile yesithombe. Isibonelo, ilensi yokuskena yomugqa ongu-16K ingase ibe namaphikseli avundlile angafika kwangu-8,192 kanye nokulungiswa okungu-160 lp/mm. Ngokuvamile, ukuphakama kokulungiswa, kuba yincane into engakwazi ukuhlukaniswa, okuholela ezithombeni ezibukhali.
Usayizi wePixel
Usayizi wephikseli ukalwa ngama-micrometers (μm) futhi uthonya ngokuqondile ukulungiswa kwecala. Kubhekiselwa kusayizi omkhulu wenzwa noma ubukhulu bendiza yesithombe lensi engamboza. Uma usebenzisa ilensi yokuskena umugqa, kubalulekile ukukhetha ehambisana nosayizi wenzwa yekhamera ukuze usebenzise ngokugcwele amaphikseli asebenzayo futhi uzuze izithombe zekhwalithi ephezulu. Isibonelo, ilensi enosayizi wephikseli ongu-3.5 μm iyakwazi ukulondoloza imininingwane eyengeziwe ngesikhathi sokuskena, kuyilapho usayizi wamaphikiseli angu-5 μm ulungele izinhlelo zokusebenza ezidinga ububanzi bokuskena obukhudlwana.
Ukukhulisa Okubonakalayo
Ukukhuliswa kokubona kwamalensi okuskena komugqa ngokuvamile kusuka ku-0.2x kuya ku-2.0x, kuye ngedizayini yelensi. Amanani athile okukhulisa, njengalawo asukela ku-0.31x kuya ku-0.36x, afanele imisebenzi ehlukahlukene yokuhlola.
Ubude bokugxila
Ubude bokugxila bunquma inkambu yokubuka nobubanzi besithombe. Amalensi agxilile adinga ukukhetha ngokucophelela okusekelwe ebangeni lokusebenza, kuyilapho ama-zoom lens enikeza ukuguquguquka ngokuvumela ukulungiswa kobude bokugxila ukuze kuhlangatshezwane nezimo zohlelo lokusebenza ezihlukene.
Uhlobo lwesixhumi esibonakalayo
Izixhumanisi ezijwayelekile zamalensi zifaka i-C-mount, i-CS-mount, i-F-mount, ne-V-mount. Lezi kufanele zihambisane nesixhumi esibonakalayo sekhamera ukuze kuqinisekiswe ukufakwa nokusebenza okufanele. Isibonelo, ama-lens e-F-mount avame ukusetshenziswa emishini yokuhlola yezimboni.
Ibanga lokusebenza
Ibanga lokusebenza lisho ibanga eliphakathi kwengaphambili lelensi nendawo engaphezulu yento ethathwa esithombeni. Le parameter iyahlukahluka kakhulu kumamodeli amalensi ahlukene futhi kufanele ikhethwe ngokuya ngohlelo oluthile. Isibonelo, ikhanda lokuskena elinebanga eliphezulu lokusebenza elingu-500 mm lilungele imisebenzi yokulinganisa okungeyona yokuxhumana naye.
Ukujula Kwenkundla
Ukujula kwenkambu kubonisa ububanzi obungaphambili nangemuva kwento lapho kugcinwa khona isithombe esicijile. Ngokuvamile kuthonywa izici ezifana nokuvuleka, ubude bendawo, nebanga lokudubula. Isibonelo, ukujula kwenkambu efinyelela ku-300 mm kungaqinisekisa ukunemba kokulinganisa okuphezulu.
Izincomo zokukhetha amalensi okuskena komugqa:
1. Cacisa Izidingo Zokuthwebula:Nquma amapharamitha angukhiye afana nokulungiswa, indawo yokubuka, indawo ephezulu yesithombe, nebanga lokusebenza ngokusekelwe kuhlelo oluhlosiwe. Isibonelo, amalensi okuskena komugqa wokucaca okuphezulu anconyiwe ezinhlelweni ezidinga ukuthwebula izithombe ezinemininingwane, kuyilapho amalensi anenkundla ebanzi yokubuka afanele ukuthwebula izinto ezinkulu.
2. Qonda Ubukhulu Bento:Khetha ubude bokuskena obufanele obusekelwe kusayizi wento ehlolwayo.
3. Isivinini Somfanekiso:Khetha ilensi yokuskena umugqa esekela isivinini sokuthwebula esidingekayo. Kuzinhlelo zokusebenza ezinesivinini esikhulu, amalensi akwazi ukusekela amanani ozimele aphezulu kufanele akhethwe.
4. Izimo Zemvelo:Cabangela izici zemvelo ezifana nezinga lokushisa, umswakama, namazinga othuli, bese ukhetha ilensi ehlangabezana nalezi zidingo zokusebenza.
Imingcele eyengeziwe okufanele icatshangelwe:
Ibanga lokuhlanganisa:Lokhu kubhekisela ebangeni eliphelele ukusuka entweni ukuya kulensi futhi ukusuka kulensi ukuya kuyinzwa yesithombe. Ibanga elifushane le-conjugate liphumela kububanzi obuncane bezithombe.
Ukukhanya Okuhlobene:Le pharamitha imele isilinganiso sokudluliswa kwe-optical ezindaweni ezihlukene zamalensi. Kuthinta kakhulu ukufana kokukhanya kwesithombe kanye nokuhlanekezela kwe-optical.
Sengiphetha, ukukhetha ilensi efanelekile yokuskena umugqa kudinga ukuhlolwa okuphelele kokucaciswa kobuchwepheshe okuningi kanye nezidingo eziqondene nohlelo lokusebenza. Ukukhetha ilensi efaneleke kakhulu yekesi yokusetshenziswa ehlosiwe kuthuthukisa ikhwalithi yokucabanga nokusebenza kahle kwesistimu, ekugcineni kuholele ekusebenzeni okuhle kwesithombe.
Isikhathi sokuthumela: Jul-28-2025