Metabones Speed Booster XL 0.64x Adapter for Full-Frame Canon EF-Mount Lens to Select Micro Four Thirds-Mount Cameras
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|Compatible Mountings||Canon EF|
About this item
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- Canon EF Lens to Micro 4/3 Body
- Supports In-Camera Aperture Control
- 0.64x Micro 4/3 Crop Factor Compensation
- 1.3-Stop Increase in Lens Apertures
- 6 Optical Elements in 4 Groups
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The T Speed Booster XL 0.64x Adapter for Full-Frame Canon EF-Mount Lens to Select Micro Four Thirds-Mount Cameras from Metabones allows a full-frame Canon EF-mount lens to be mounted onto a Micro Four Thirds-mount camera. While doing so, the adapter's optics help to maximize the connected lens's apparent angle of view while providing a 1.3-stop increase for the camera over the lens's aperture range.
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Since day one the mount was a little loose, not big deal since I read is a normal problem and as I live abroad I can't send it back.
It's been a year now and this mount is giving me so many problems I had to stop using it for payed videos.
The mount is so bad that the SB (Speed Booster) twists clockwise and counter-clockwise when 'mounted'. I can barely use it when taking photos but I literally can't use it when filming because the camera automatically stops the recording because the "lens has been unmounted".
Sometimes the adapter mounts correctly (doesn't twist but still very loose), whenever this happens another problem comes in, If I get to touch the lens, the camera completely freezes and I have to remove the battery.
I have no Idea how to fix this, I use my camera for work and bought this metaebones for it and can't even use it after a year.
I wish metabones do something about it. This is so frustrating.
Example - turned my f/4.0 canon 11-24 superwide into a f2.5 killer wide lens
It allows me to expand the usage of my Canon wide angle zoom lenses paired with my M43 GX8 camera.
Such as 11-24mm f4L, 16-35mm f2.8L II, thanks for the equivalent magnification factor 1.28 (2*0.64) with this adapter.
And it significantly increases my lens aperture by 1 2/3 faster.
My 11-24mm f4 becomes 14-31mm/f2.8 and 16-35mm becomes 20-45mm/f1.8 equivalent to 35mm full frame lens!!
The only cons is when I paired my Canon 11-24mm F4 with M43 GX8, it is hard to get auto focused at 11mm.
Other than that, I am very satisfactory with my purchase.
But it does not work with my Olympus E-M1 Mark II !
By Alex V on August 28, 2017
But yes, it costs an arm and a leg, so if you don't need the crop and use Sigma lenses, get the Viltrox instead.