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Home Forums Q&A Forum Sigma VS. Samyang Reply To: Sigma VS. Samyang

#12107 Reply
viktor pavlovic
viktor pavlovic
Keymaster

Pisao sam na brzinu prosli odgovor, nisam video da si pitaonza speed booster. Na verybiglobo.com ces naci dve recenzije speedboostera, ukucaj na glavnoj stranici u pretrazivac.

Ipak, za tvoj fotoaparat speedbooster ne postoji (bar ne komerciajlno dostupan). Problem je u tome, sto je odstojanje objektiva od senzora vece nego kod mirrorlessa pa izmedju ne moze da stane adapter u kome bi mogla da se smesti korekciona optika.

Inace speedbooster funkcionise tako sto poput baterijske lampe sa “zoom” funkcijom (na primer maglite), suzi svetlo koje prolazi full frame objektivom na velicinu APS-C senzora. Time sto se snop svetlanvise koncentrise, svetlo postaje intenzivnije (gušće).

Speed booster je u biti obrnuta optika od tele convertera. Prvi speedbooster je napravio Metabones u saradnji sa Conurus i Caldwell optics. Brian Caldwell je inace moj poznanik i zahvaljujuci njemu sam testirao kao prvi na svetu oba Speedboostera (verzija I i Ultra (II))

Ako se odlucis za neku od platformi (savetovao sam ti Sony A6000, danas je to A6500) moci ces da koristis speedbooster. Isto tako bi mogao da koristis Techart Pro, adapter sa ugradjenim motorom koji omogucava da koristis starije i jeftinije manualne objektive u autofocus modu (naravno, AF nije super brz ali ja ovaj adapter obozavam, jer uglavnom slikam sa starim manualnim objektivima.)

Moje pitanje je opet – zasto ti treba f/1.4 kod 35mm objektiva?

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