Sigma 18-35mm f / 1.8 DC HSM Art lens e phatlalalitsoe bakeng sa APS-C DSLRs

Sigma e phatlalalitse lense ea bonono ea 18-35mm f / 1.8 DC HSM, e reretsoeng lik'hamera tsa APS-C DSLR.

Sigma e maketse lefatše lohle ka phatlalatso ea lense ea pele ea katametso e fanang ka lesoba la f / 1.8. Khamphani e e hlalositse e le e 'ngoe ea liqholotso tsa eona tse kholo ka lebaka la meeli e behiloeng ke melao ea fisiks.

Sense ea Sigma 18-35mm F1.8 DC HSM e fetoha lense ea pele ea lefats'e e nang le lesoba la f / 1.8

Sense ea Sigma 18-35mm F1.8 DC HSM ea Art ke mohlolo oa mahlale, o bonts'ang hore na hobaneng tlholisano e matla e tlameha ho ba teng lefatšeng la lik'hamera tsa dijithale. Ena ke lense ea pele ea katametso e khonang ho boloka sekheo se ts'oanang ka potlako ho fihlela boholo ba katametso.

Moetsi oa Japane o e bitsa optic optic bakeng sa lik'hamera tsa APS-C DSLR tse nang le lilense tse fetolehang. E fana ka 35mm e lekanang le 27-52.5mm e nang le lesoba le tsitsitseng la f / 1.8, le lona le khahlisang haholo, hobane lilense tse ngata tsa Canon le Nikon li fana ka lesoba la f / 2.8.

Limakatso tsa Sigma tsa theknoloji li beha ts'ebeliso pele ho taolo

Joalo ka lilense tsohle tsa Sigma, "tsoelo-pele ena ea mahlale" e tla etsoa feela Japane, ho boletse Mopresidente oa Sigma America, Mark Amir-Hamzeh. Phihlelo ea k'hamphani ka lilense tse pharalletseng e thusitse baenjiniere ho etsa khalase e khethehileng ea "Low Low", e etselitsoeng ho fokotsa litšitiso tsa mahlo, joalo ka chromatic aberration.

Bakeng sa ho fihlela phallo e potlakileng joalo, Sigma o qobelletsoe ho etsa tumellano. 18-35mm F1.8 DC HSM Art optic e boima haholo ebile e kholo bakeng sa sehlopha sa eona, kaha e boima ba li-lbs 1.79 le litekanyo tsa 4.76-inch ka bolelele. Boholo ba bophara ba eona bo lula ho 3.07-inch, ha khoele ea eona ea sefa e eme ho 2.83-inch.

Sense ea Sigma 18-35mm F1.8 DC HSM e entsoe ka likarolo tse 17 tse arotsoeng ka lihlopha tse 12, tse nang le likarolo tse hlano tsa likhalase tsa Super Low Dispersion le likarolo tse 'ne tsa aspherical. Ntle le moo, e na le diaphragm e chitja ea lehare e 9 mme e tla ts'ehetsa Canon EF, Nikon DX, le Sigma SA.

Ha ho botsitso ba setšoantšo, empa Hyper Sonic Motor e fana ka autofocus e betere

Moriri oa lense o kopaneng o entsoe ka thepa ea Thermally Stable Composite, e leng rekere ho feta polasetiki.

Lens ea Sigma e khahlisang f / 1.8 zoom lens e na le switch ea AF / MF le enjene e ntlafalitsoeng ea hypersonic, e netefatsang autofocus e khutsitseng haholo le e potlakileng. Ho feta moo, k'hamphani e re lense e ka shebana le hole le li-inches tsa 11.02 le hore palo ea eona e nyane haholo ke f / 16.

Leha ho le joalo, ho na le bothata bo le bong bo ka amang ba bang ba lifoto: lense ha e sebelise mofuta ofe kapa ofe oa mahlale a ho tsitsisa setšoantšo.

Letsatsi la phatlalatso le leseli la theko le ntse le emetse ho tseba

Letsatsi la ho lokolloa ha lense ea Sigma 18-35mm F1.8 DC HSM Art, theko, le ho fumaneha ha li tsejoe hajoale. Lintlha tse ling li kanna tsa senoloa haufinyane.

Khamphani e netefalitse hore boema-kepe ba eona ba lense ea USB bo tla tsamaisana le optic ena e ncha, ho lumella lifoto ho ntlafatsa firmware le ho etsa litlhophiso tse fapaneng.