Irix 15 hli f / 2.4 lens tshaj tawm rau tag nrho cov qauv duab DSLRs

Irix tau tshaj tawm lub lens uas xa mus rau tus kws yees duab zaj npau suav. Nws muaj li ntawm 15mm f / 2.4 dav-lub kaum sab xis Prime nrog phau ntawv tsom rau tsim tsim rau tag nrho cov koob yees duab DSLR koob yees duab.

Ib lub tuam txhab uas muaj npe nrov rau kev tsim tawm phau ntawv-tsom-tsuas yog optics nrog cov duab zoo dua rau tus qauv duab tag nrho DSLRs yog Zeiss. Tus tswv lag luam German tseem tsim cov iav lo ntsiab muag ntawm autofocus, tab sis tam sim no nws muaj tus neeg sib tw hnyav rau nws phau ntawv ua kom pom tseeb tawm-kab.

Cov kev sib tw los ntawm Irix, uas nyuam qhuav coj cov ntaub ntawv tawm ntawm lub dav-optic nrog focal ntev ntawm 15 hli thiab qhov siab tshaj plaws ntawm f / 2.4. Cov khoom yuav tso tawm lub caij nplooj ntoo hlav no rau Canon, Nikon, thiab Pentax DSLRs, tab sis ua ntej, cia saib seb nws tau muab dab tsi.

Irix tshaj tawm qhia 15 hli f / 2.4 phau ntawv tsom iav

Kev tshaj tawm xov xwm tau hais tias Irix 15mm f / 2.4 lens tuaj nrog cov thev naus laus zis tshiab. Lub tshuab txuas ntxiv rau hauv optic tau hais kom coj kev ua haujlwm tsom rau kev ua haujlwm mus rau qib tom ntej, raws li cov neeg siv yuav muaj kev tsom xam ntsuas, lub ntsuas qhov hyperfocal, ntxiv rau infinity nyem ntawm lawv pov tseg.

Irix 15 hli f / 2.4 dav-lub kaum ntse ntse dav lens muaj cov thev naus laus zis tshiab, kev ua haujlwm zoo dua ntais, thiab huab cua tsis zoo.

Tsom ntsuas phoo yog qhov tsis zoo uas tso cai rau cov neeg siv mus kaw lub ntsej muag ua kom pom tseeb. Nws tuaj yeem siv los ntawm cov kws yees duab thaum lawv paub meej tias lawv tau tsom mus rau qhov yog, yog li lawv yuav xav kom lub nplhaib tsom mus rau hauv qhov chaw.

Hyperfocal nplai yog muaj los qhia cov neeg siv ntawm lub qhov tob ntawm daim teb rau qhov xaiv qhov tshaj lij, thaum lub sijhawm infinity ua rau lub suab nyem thaum cov kws yees duab teeb tsom mus rau infinity. Txoj kev no, cov neeg siv yuav paub thaum lawv lub lens tsom mus rau infinity.

Irix 15 hli f / 2.4 lens muaj cov duab zoo dua

Ib qho ntawm qhov tseem ceeb ntawm lub lens yog nws cov duab zoo. Lub Irix 15mm f / 2.4 lens ua haujlwm txawv tshaj plaw hauv chav haujlwm no, raws li tau hais hauv tsab xov xwm tshaj tawm.

Nws los nrog kho qhov muag sab hauv tsim nrog 15 yam hauv 11 pawg. Lub ntsiab ntawm peb cov ntsiab lus muab cov ntsiab lus zoo-siab qhov hloov pauv, thaum ob peb ntawm lawv yog Extra-Low Dispersion ntsiab.

Ob lub ntsiab lus ntxiv yog aspherical, yog li qhov kev sib koom ua ke tag nrho txo ​​chromatic aberrations thiab distortions, thaum ua kom pom kev ci ntsa iab ntawm cov npoo. Tsis tas li ntawd, qhov optic no tsim cov neutrino txheej uas minimizes flare thiab ghosting.

Canon, Nikon, thiab Pentax cov neeg siv yuav tuaj yeem yuav nws hauv lub caij nplooj ntoo hlav 2016

Irix 15 hli f / 2.4 lens yog huab cua, txhais tau tias nws muaj kev tiv thaiv tiv thaiv kev ya raws, txaws thiab hmoov av thaum siv los ua ke nrog lub koob yees duab huab cua.

Qhov ua tau zoo tshaj plaws yuav raug tso tawm ua ob hom: Blackstone, uas tau kos cov cim fluorescent thiab ib lub cev ua los ntawm txhuas thiab magnesium, thiab Firefly, uas muaj ntau lub nplhaib ntau dua ergonomic thiab kev tsim kho ultra-hnav.

Blackstone yuav hnyav 685 grams nrog Canon mount thiab 653 grams nrog Nikon mount, thaum Firefly yuav hnyav 608 grams rau Canon koob yees duab thiab, ntsig txog, 581 grams rau Nikon koob yees duab.

Irix tau lees tias cov optic yuav dhau los muaj nyob hauv Canon EF, Nikon F, thiab Pentax K nce. Lub lens yuav raug tso tawm qee lub caij nplooj ntoos hlav no rau cov nqi tshaj tawm.