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Pierwsze wrażenia opisane na Dpreview:
First Impressions: Metabones Speed Booster: Digital Photography Review
"There's a lot to be excited about with a product that so transforms lens behavior and addresses such a long-standing issue for photographers who long for the wide-angle and light-gathering performance of their older full frame lenses on their newer APS-C body. Image quality is very impressive, with results that compare exceptionally well against a full frame sensor. You do pay a small price in terms of corner softness and CA.
The biggest remaining challenge, however, with the Canon EF to Sony NEX mount is AF speed, a direct consequence of pairing a PDAF-optimized lens on a CDAF sensor. And to their credit, Metabones makes it very clear that AF performance is going to lag far behind what you'd get by using the Sony NEX's conventional AF system.
This does effectively make the Speed Booster an even more niche product, as it's best suited for manual-focus shooters. We'd be keen to see a camera manufacturer license this now-proven technology and offer this optical quality and near-full-frame performance mated with an effective AF system. But for now, we tip our hats to Metabones for releasing a product that accomplishes what many had thought nearly impossible."
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Tutaj przykłady na NEXie7 z Canonem EF
Sony NEX 7 + Canon MP-E65 | Flickr - Photo Sharing!
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I pocieszające informacje
From an FAQ section the MB product site:
“Will there be Speed Boosters™ for Canon FD, Minolta MD and Sony Alpha lenses?
We will be looking into Canon FD, Minolta MD and Sony Alpha in the future. We do not have an estimated date yet. Disclaimer: this shall not be construed as a commitment to ship – we are not done prototyping any of these yet but we will conduct testing to decide if these lenses are free of interference issues with the optics of the Speed Boosters™ before we will be able to turn them into actual products.”
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Jeszcze przykład na kamerze
http://www.youtube.com/watch?v=H5uXvDFXwHc&feature=player_embedded
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Z sampli wniosek nasuwa się jeden: poprawy jakości obrazka w stosunku do matrycy FF nie ma.
Trudno się było zresztą tego spodziewać.
MZ wartość tego typu konwertera przesadzona przynajmniej czterokrotnie.
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Ale jest jaśniej i... szerzej??? ;)
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Dla aparatów z mniejszą minimalną odległością od bagnetu - owszem.
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