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Review Summary
2019-01-15T18:00:28
Really works well especially with “L” glass. Low light has never been so bright. Locks firmly.
STANLEY B.
2018-12-19T09:22:10
Works pretty well with my Canon lenses and Sony A7III. So far a few times the autofocus will stop, so I have to turn the camera off and on again and sometimes reattach the lens for it to go back to normal AF. One surprise I had is that with the Metabones adapter on the A7III you can't shoot full frame, only with the APS-C sensor selected. So now I have a really fancy 10MP camera until I upgrade my lenses from Canon to Sony.
ZACH C.
2018-06-29T11:00:17
I was VERY leery on spending this kind of money on this since I didn't like how my sigma adapter performs. I can now use my 2 Sigma Art lenses on my Sony with no lag and no focus issues!
KAT A.
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A9, A7SII, A7RII, A7II, A7S, A7R, A7
A6500, A6300, A6000, A5000
PXW-FS7M2, PXW-FS5, PXW-FS7, NEX-FS700, NEX-FS100
NEX-EA50, NEX-VG900, NEX-VG30, NEX-VG20, NEX-VG10
NEX-7, NEX-6, NEX-5R, NEX-5N, NEX-5, NEX-C3, NEX-3
Fast AF on all E-mount cameras (phase detection AF only with Sony A9):
Canon EF 8-15mm f/4L USM Fisheye
Canon EF 11-24mm f/4L USM
Canon EF 16-35mm f/2.8L USM
Canon EF 16-35mm f/4L IS USM
Canon EF 20-35mm f/3.5-4.5 USM
Canon EF 24mm f/1.4L USM
Canon EF 24-105mm f/4L IS USM
Canon EF 28-80mm f/3.5-5.6 II
Canon EF 40mm f/2.8 STM
Canon EF 50mm f/1.2L USM
Canon EF 50mm f/1.4 USM
Canon EF 50mm f/1.8 STM
Canon EF 70-200mm f/2.8L IS II USM
Canon EF 70-200mm f/4L IS USM
Canon EF 70-200mm f/4L USM
Canon EF 70-300mm f/4-5.6L IS USM
Canon EF 85mm f/1.2L II USM
Canon EF 100mm f/2.8L Macro IS USM
Canon EF 100-400mm f/4.5-5.6L IS USM
Canon EF 100-400mm f/4.5-5.6L IS II USM
Canon EF 180mm f/3.5L Macro USM
Canon EF 200mm f/2.8L II USM
Canon EF 300mm f/4L IS USM
Canon EF 400mm f/5.6L USM
Canon EF Extender 1.4x III
Canon EF Extender 2x II
Sigma 24-105mm f/4 DG OS Art
Sigma 50mm f/1.4 DG HSM
Tamron SP 15-30mm f/2.8 VC USD A012
Tamron SP 24-70mm f/2.8 Di VC USD A007
Tamron SP 45mm f/1.8 Di VC USD F013
Tamron SP 70-200mm f/2.8 Di VC USD A009
Tamron 70-300mm f/4-5.6
Tamron SP 90mm f/2.8 Macro
Tamron 150-600mm f/5-6.3 VC USD A011
Tested by the community, thanks!:
Canon EF 14mm f/2.8L II USM
Canon EF 24-70mm f/4L IS USM
Canon EF 28-300mm f/3.5-5.6L USM
Canon EF 35mm f/1.4L II USM
Canon EF 35mm f/2L IS USM
Canon EF 35-350mm f/3.5-5.6L USM
Canon EF 70-200mm f/2.8L IS USM (Mark I)
Canon EF 70-200mm f/2.8L USM (non-IS)
Canon EF 75-300mm f/4-5.6 IS USM
Canon EF 85mm f/1.8 USM
Canon EF 400mm f/2.8L IS USM (Mark I)
Canon EF 400mm f/5.6L USM
Canon EF 500mm f/4L IS USM (Mark I)
Sigma 12-24mm f/4.5-5.6 (Ver I)
Sigma 20mm f/1.4 DG HSM Art
Sigma 24mm f/1.4 DG HSM Art
Sigma 35mm f/1.4 DG HSM Art
Sigma 50mm f/1.4 Art
Sigma 50-500mm f/4-6.3 OS HSM
Sigma 70-200mm F2.8 APO EX DG OS HSM
Sigma 85mm f/1.4 EX DG HSM
Sigma 150mm f/2.8 Macro
Sigma 150-600mm f/5-6.3 OS HSM Contemporary
Phase-detect AF on A9, A7RII, A7II, A6500 and A6300 only, unable to contrast-detect AF accurately if at all:
Canon EF 24-70mm f/2.8L II USM
Canon EF 28-70mm f/3.5-4.5 II
Canon EF 35mm f/1.4L USM
Canon EF 50mm f/1.8 II
Canon EF 100mm f/2.8 Macro USM
Canon EF 135mm f/2L USM
Contax N Vario Sonnar 17-35mm f/2.8
Contax N Planar 50mm f/1.4
Contax N Vario Sonnar 70-200mm f/3.5-4.5
Contax N Planar 85mm f/1.4
Manual focus only:
Samyang 35/1.4
Zeiss CP.2 25mm/T2.9
Zeiss CP.2 100mm/T2.1
Zeiss ZE Distagon 15/2.8
Zeiss ZE Distagon 21/2.8
Zeiss ZE Distagon 35/2
Zeiss ZE Makro-Planar 50/2
Zeiss ZE Makro-Planar 100/2
Not supported:
Focus confirmation "chip" (e.g. Dandelion)
Tamron 28-300/3.5-6.3 XR Di VC LD Aspherical [IF] MACRO A20
Canon EF
Sony E (APS-C)
0.71x
4/5
Really works well
By STANLEY B.
Really works well especially with “L” glass. Low light has never been so bright. Locks firmly.
SO worth it!
By KAT A.
I was VERY leery on spending this kind of money on this since I didn't like how my sigma adapter performs. I can now use my 2 Sigma Art lenses on my Sony with no lag and no focus issues!
Overcome the limitations of your camera system with the high-quality Canon EF to Sony E-Mount T Speed Booster ULTRA II 0.71x Adapter. This innovative and durable adapter is designed to convert Canon EF lenses to a Sony E-Mount system, providing a versatile solution for photographers who use multiple camera brands.
The compact adapter incorporates an advanced 5-element/4-group optical design, featuring ultra-high index tantalum-based optical glass. This cutting-edge design ensures extraordinary optical performance, enhancing corner sharpness, reducing distortion, and minimizing vignetting.
The Speed Booster ULTRA II has a magnification of 0.71x, effectively reducing the crop factor of mirrorless cameras with DX-sized sensors, such as Sony E-mount and Fuji X-mount cameras, from 1.5x to 1.07x. This makes it an indispensable tool for photographers seeking to improve image quality, especially in low light conditions.
The ULTRA II design utilizes exotic materials at the forefront of glassmaking technology, ensuring optimal performance with virtually all full-frame SLR lenses. It excels with professional-grade f/2.8 zoom lenses, transforming them into high-speed zooms with excellent contrast and resolution from the center to the edges of the image.
The adapter also supports AF-C tracking during high-speed drive at up to 10fps on Sony A9, and offers smooth iris support with the latest Canon, Tamron, and Sigma lenses. A custom function button allows for more than 50 functions, such as Aperture Preview and Eye-AF, on A9, A7 series, A6500, and A6300.
The Canon EF to Sony E-Mount T Speed Booster ULTRA II 0.71x Adapter is also equipped with a rubber gasket to protect the E-mount connection from dust and moisture, and a detachable tripod foot compatible with Arca Swiss, Markins, and Photo Clam ball heads.
This adapter increases the maximum aperture by 1 stop and makes the lens 0.71x wider, enhancing your camera's capabilities. It also supports 5-axis in-body image stabilization of A7II, A7RII, and A7SII, and is powered by the camera body, eliminating the need for an external power source.
With its fast contrast-detection AF on all E-mount cameras and pure phase-detection autofocus support on A9, A7RII, A7II, A6500, and A6300, this adapter ensures sharp, clear images every time.
Please note that full-frame lenses are required for use with this adapter, and EF-S/DX/DC/Di II lenses are not supported. Autofocus may not work if the maximum aperture of the lens plus any EF Extender or other teleconverter attached is smaller than f/8 before boost or smaller than f/5.6 after boost.
Experience the difference in your photography with the Canon EF to Sony E-Mount T Speed Booster ULTRA II 0.71x Adapter.