Sida la og yahay, our 57x 850mm dheer way ka yar tahay cabir ahaan (kaliya 32cm oo dherer ah, halka alaabada la midka ahi ay guud ahaan ka badan yihiin 40cm), miisaankoodu ka fudud yahay (6.1kg ee alaabada la midka ah, halka badeecadeenu ay tahay 3.1kg), oo ka sarreeya caddaynta (qiyaastii 10% ka sarreeya khadka tijaabada caddaynta ) marka la barbar dhigo isla nooca 775mm lens zoom motorized. Marka laga reebo tignoolajiyada isku xirka kooxaha badan iyo naqshadeynta isku dhafan, arrin kale oo aad muhiim u ah ayaa ah isticmaalka naqshadeynta muraayadaha aspherical.

Waa maxay faa'iidooyinka isticmaalka muraayadaha aspherical lenses telephoto?

Baabi'inta aberration-spherical

Muraayadaha wareegsan waxay sababi karaan aberration wareega, taas oo macnaheedu yahay tayada sawirka aan iswaafaqayn ee u dhexeeya bartamaha iyo geesaha muraayada. Muraayadaha aspherical-ka ayaa sixi kara khalkhalkan wareegsan, taasoo keentay sawir cad oo isku mid ah.

Hagaajinta tayada indhaha

Muraayadaha aspherical waxay hagaajin karaan tayada nidaamka indhaha, samaynta sawir-qaadista si sax ah. Waxay yareyn karaan cilladaha sida miyir-beelka, qalooca goobta, iyo aberration chromatic, si ay u wanaajiyaan saxnaanta sawirka iyo joogtaynta.

Xalka kordhinta

Isticmaalka muraayadaha indhaha ayaa kordhiya xallinta, taas oo u oggolaanaysa soo bandhigid faahfaahsan oo faahfaahsan. Waxay yarayn karaan kala firdhisanaanta iftiinka iyo kala-baxa chromatic, si ay u wanaajiyaan caddaynta sawirka iyo fiiqan.

Yaraynta miisaanka iyo cabbirka muraayadda

Marka la barbardhigo muraayadaha caadiga ah ee wareegsan, muraayadaha aspherical-ku waxay noqon karaan kuwo khafiif ah, si ay u yareeyaan miisaanka iyo xajmiga muraayadda, ka dhigaya qalabka kamaradda mid fudud oo la qaadi karo.

Kordhinta dabacsanaanta naqshadaynta muraayadaha

Isticmaalka muraayadaha aspherical waxay siisaa naqshadeeyayaasha muraayadaha leh xoriyad iyo dabacsanaan dheeraad ah. Waxaa loo qaabayn karaa iyadoo loo eegayo baahida sawirida gaarka ah si loo gaaro saameyn sawireed oo wanaagsan.

Marka la soo koobo, isticmaalka muraayadaha aspherical-ka waxay wanaajin karaan tayada sawirka, kordhinta xallinta, yaraynta miisaanka iyo cabbirka, waxayna bixiyaan dabacsanaan weyn xagga naqshadaynta muraayadaha. Sifooyinkan ayaa ka dhigaya qayb lagama maarmaanka u ah muraayadaha teleefanada.

Isla mar ahaantaana, muraayadaha aspherical-ka ayaa aad qaali u ah, sidaas awgeed maalmahan in badan oo lenses koronto ah ma isticmaalaan muraayadaha aspherical si ay u yareeyaan kharashka.