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5stars
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28 reviews
Optically wonderful. Autofocus possibly less than stellar, if you need that.
So good optically, that it is perhaps better than the Metabones. I use with manual focus lenses only so can't comment on the autofocus but have heard it is not without issues.
Verified purchase: Yes • Condition: pre-owned • Sold by: mografik
A very useful product indeed
AF and Aperture Work well with Tokina 14-20 f/2 on Lumix GH4. This lens now gives around 20-30mm full frame equivalent and 40-60mm with 2x digital zoom with video at 4K resolution without noticeable loss of quality; all at a speedy f/1.4. A very useful product indeed. Seems reliable after a few weeks use. Flare resistance and resolution seem consistent with the competition. Only niggles are: I had to adjust it to get infinity focus, and if I use the aperture control on the device, it will only work that way from then on; you have to reboot the camera to get it working from the camera controls again. Not an issue unless you accidentally knock the aperture control.Read full review
Verified purchase: Yes • Condition: new • Sold by: buy8bai
Great alternative to a Metabones
Easy to set up and I found mine to be a snug fit. Works perfectly on my GH5/nifty fifty.
Verified purchase: Yes • Condition: new • Sold by: avmphoto
Best bang for buck
Had to adjust the optical element to achive the infinity focus correctly. Lens wiggle on this mount a bit but nothing too serious.
Good product for the money!
Verified purchase: Yes • Condition: new • Sold by: avmphoto
Good adapter for reasonable price
It is much cheaper than Metabones and there is not that big difference between these two adapter. I bought viltrox and saved money for an extra lens. You can find many reviews which show issues about viltrox but I think the most important in a video is the content and viewers won't check aberrations in the corners of the frame. Also this adapter is great for general use.Read full review
Verified purchase: Yes • Condition: new • Sold by: avmphoto
Awesome, definitely recommend
Great product! Best value for money, speedbooster killer!
Verified purchase: Yes • Condition: new • Sold by: avmphoto
Works as featured
I was positively surprised that this worked so well and for such an accessible price. Works great with the Sigma 18-35 and provides an extra stop too, which is a life saver.
Verified purchase: Yes • Condition: new • Sold by: buy8bai
Good
I'm a filmmaker. I use Metabones Speedbooster. The Vilrtox very similar, but very cheap. :)
The Metabones AF faster and better, but I newer use AF.
Very good picture quality!
Verified purchase: Yes • Condition: new • Sold by: avmphoto
Very good speed boster
Good speed booster adapter for my camera gh5s and lens EF 100mm L
Verified purchase: Yes • Condition: new • Sold by: avmphoto
More Lights , More Sharpness.
Great and cheap Speedbooster for my Canon lens
Verified purchase: Yes • Condition: new • Sold by: avmphoto