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Review Summary
2021-05-01T06:38:47
Well worth the money! If you need to run your lens wide open at the fastest aperture then you need this speed booster. The Viltrox will work well if you stop down, but wide open it was not clear and I thought that was normal until I tried this adapter. I can run my f/4 lens at f/2.8 through this lens with fantastic clarity.
Glenn G.
2019-12-27T22:11:09
This is the BEST speed buster for BMPCC4k! Very sharp works very well! Amazing product.
Azat G.
2019-11-17T08:41:29
The best adaptor in the business
Mark P.
2019-11-14T07:37:28
It works great with my Sigma Art lenses! It’s truly optimized for the Pocket 4k. I have a previous version of the Metabones for my GH4 which I put on my Pocket 4K, and there’s a noticeable improvement in sharpness across the image. And it’s leagues above my Viltrox speed booster. Only con is you have to be careful when putting it on because the rear lens element takes up most of the space around the sensor inside the camera body. It would be easy to scratch the rear lens element if you aren’t careful to line it up when attaching it - much more so than any normal lens.
JOSHUA M.
BlackMagic Pocket Cinema Camera 4K
BlackMagic Pocket Cinema Camera HD (original ver.)
BlackMagic Micro Cinema Camera
BlackMagic Micro Studio Camera 4K
BlackMagic Studio Camera 4K
BlackMagic Studio Camera
Canon EF100-400mm f/4.5-5.6L IS II USM
Canon EF100-400mm f/4.5-5.6L IS USM (I)
Canon EF100mm f/2.8L IS USM Macro
Canon EF135mm f/2L USM
Canon EF16-35mm f/2.8L II USM
Canon EF17-35mm f/2.8L USM
Canon EF17-40mm f/4L USM
Canon EF200mm f/2.8L II USM
Canon EF24-105mm f/4L IS USM (I)
Canon EF24-70mm f/2.8L II USM
Canon EF28-135mm f/3.5-5.6 IS USM
Canon EF28-70mm f/3.5-4.5 II
Canon EF28-80mm f/3.5-5.6 III USM
Canon EF300mm f/2.8L IS II USM
Canon EF300mm f/4L IS USM
Canon EF400mm f/5.6L USM
Canon EF40mm f/2.8 STM
Canon EF50mm f/1.2L USM
Canon EF50mm f/1.4 USM
Canon EF50mm f/1.8 II
Canon EF50mm f/1.8 STM
Canon EF70-200mm f/2.8L IS II USM
Canon EF70-200mm f/4L IS II USM
Canon EF70-200mm f/4L USM
Canon EF70-300mm f/4-5.6L IS USM
Canon EF8-15mm f/4L USM Fisheye
Canon EF85mm f/1.2L II USM
Sigma 135mm f/1.8 DG HSM Art 017
Sigma 24-105mm f/4 DG HSM Art 013
SIgma 24-35mm f/2 DG HSM Art 015
Sigma 30mm f/1.4 DC HSM Art 013
Sigma 35mm f/1.4 DG HSM Art 012
Sigma 50-500mm f/4.5-6.3 DG OS HSM
Sigma 50mm f/1.4 DG HSM (not Art)
Tamron 10-24mm f/3.5-4.5 VC HLD B023
Tamron 18-250mm f/3.5-6.3 A18
Tamron 18-270mm f/3.5-6.3 B003
Tamron 24-70mm f/2.8 VC USD A007 (G1)
Tamron 28-300mm f/3.5-6.3 A06
Tamron 35-150mm f/2.8-4 VC OSD A043
Tamron 70-200mm F/2.8 Di VC USD A009
Tokina 11-16mm f/2.8 AT-x PRO (I)
Zeiss 18mm f/3.5 ZE
Canon EF-Extender (Teleconverter)
Speed Booster
Canon EF
0.71x
MFT
Perfect for EF lenses on the Pocket 4K - Be careful when attaching
By JOSHUA M.
It works great with my Sigma Art lenses! It’s truly optimized for the Pocket 4k. I have a previous version of the Metabones for my GH4 which I put on my Pocket 4K, and there’s a noticeable improvement in sharpness across the image. And it’s leagues above my Viltrox speed booster. Only con is you have to be careful when putting it on because the rear lens element takes up most of the space around the sensor inside the camera body. It would be easy to scratch the rear lens element if you aren...
View full Review
Well worth the money!
By Glenn G.
Well worth the money! If you need to run your lens wide open at the fastest aperture then you need this speed booster. The Viltrox will work well if you stop down, but wide open it was not clear and I thought that was normal until I tried this adapter. I can run my f/4 lens at f/2.8 through this lens with fantastic clarity.
Explore the transformative capabilities of the T Speed Booster ULTRA 0.71x Adapter, specifically designed for Canon EF Lens to BMPCC4K Camera. This innovative adapter is not just a regular M43 Speed Booster; it's been meticulously re-engineered to optimize for the unique filter stack thickness of 2.4mm found in Blackmagic cameras, as opposed to the standard 4mm in Micro Four Thirds.
Exclusively designed for the Blackmagic Design Pocket Cinema Camera 4K (BMPCC4K), this adapter is not compatible with other M43 cameras such as those from JVC, Olympus, or Panasonic. The T Speed Booster ULTRA 0.71x significantly reduces the crop factor of the BMPCC 4K camera from 2.02x to 1.43x, producing the largest aperture optics currently available, with a maximum output aperture of f/0.9.
Experience the seamless integration of your Canon EF mount lens to Blackmagic Design cameras with M43 mount, specifically tailored for BMPCC4K. This adapter not only increases the maximum aperture by 1-stop (with a maximum output aperture of f/0.9) but also enhances the Modulation Transfer Function (MTF), making your lens 0.71x wider.
The patented 6-element/4-group optical design by Caldwell Photographic in the USA ensures superior image quality. The adapter's electrical features include smooth iris support with the latest Canon (2009+), Tamron (SP series 2013+), and Sigma (2016+) lens models, image stabilization (IS) lens support, and push autofocus if supported by the camera.
The T Speed Booster ULTRA 0.71x Adapter also supports Cinema EOS lens (CN-E 18-80mm T4.4 L), including AF (requires external 5V power via micro USB port), auto iris, and servo zoom. It's powered by the camera body, eliminating the need for an external power source with most lenses.
Constructed from durable aluminum alloy and brass with chromium plating, this adapter is designed to last. It features a satin surface finish and a rubber gasket that protects the M43 mount connection from dust and moisture. The detachable tripod foot is compatible with Arca Swiss Style ball head, such as Markins and Photo Clam, or can be attached to a quick release plate by a 1/4"-20 screw. The tripod foot is tailor-made to match the exact height as the BMPCC4K camera body, ensuring a perfect fit.