Specifically designed to work with the Blackmagic Cinema Camera with Micro 4/3 mount, the Canon EF to Blackmagic 2.5k T Speed Booster Micro 4/3from Canon EF to Blackmagic 2.5k T Speed Booster Micro 4/3corrects your full frame Canon EF mount lens to work on the smaller sized sensor of your BMCC by shrinking the image circle of the lens to fit on the BMCC's sensor. The net effect of this is to cancel out the crop factor to the image usually experienced when using a full frame lens on a smaller sized sensor, and to increase the effective speed of the lens by more than a stop. This adapter makes your lens 0.64x wider, and increases the maximum aperture by one and a third stops, as opposed to the standard Metabones MFT adapter that effectively widens the lens by 0.71x and increase the maximum f-stop by one stop. This adapter adjusts the crop factor of your camera from 2.39x to 1.53x, thus effectively transforming it into a Super 35 format cine camera. This adapter features improved internal flocking for reduced internal reflectionx compared to the previous verson.

You can also use the adapter on a Blackmagic Designs Pocket Cinema Camera, which has an active MFT mount. When using it with a camera with an active MFT mount, the camera powers the adapter, however, when mounted on a camera with a passive MFT mount such as on the BMCC or the Digital Bolex D16 MFT, you need to use an optional 5 VDC battery connected to the Speed Booster's Micro-USB socket. The speed booster houses a 32-bit processor supporting image stabilization on IS compatible lenses. The speed booster houses a 32-bit processor. 

Metabones Speed Boosters are made of precision-machined brass with chromium plating on both the camera body and the lens side of the booster in order to ensure smooth mounting, quality aesthetic, and durability. This adapter has a detachable tripod foot that is compatible with Arca Swiss, Markins, and Photo Clam ball heads.

Please note: This adapter is designed specifically for Blackmagic Designs Cinema Camera with an MFT mount. It will work on a BMPCC as well, but may damage other cameras that use an MFT mount.

Canon EF Lens to Blackmagic MFT Mount    Increases Lens Speed by 1 1/3 Stop    Increases Angle of View by 0.64x    Reduces 35mm Equivalent Crop to 1.53x    Manual Setting of Lens Aperture    Supports Image Stabilization (IS) Lenses    Infinity Adjustment    32-Bit Processor; Switched-Mode Power    Removable Arca-Type Tripod Mount    Black Matte Interior; Black Exterior

Allows a full frame Canon EF lens to be mounted on an optional Blackmagic Cinema Camera, increasing the angle of view by 0.64x and increases the maximum aperture one and a third f/stop. This reduces the full-frame crop factor of the BMCC from 2.39x to 1.53x, essentially transforming it into a Super 35 format cine camera.

Can be powered by an external 5V Micro USB power supply and incorporates a jog-dial button to control aperture.

Electronic integration of the camera's aperture is supported and controlled via the camera body. Autofocus is not supported but lens-based image stabilization is supported and EXIF data is communicated.

Third party EF mount lenses such as those by Sigma, Tamron and Tokina are compatible however third party zoom lenses may need to be registered with the Speed Booster first in order to detect their maximum aperture.

High performance 32-bit processor and efficient switched-mode power supply is featured and the speed booster is powered by the camera body.

Precise fit and solid connection - lens has no play, gap or wiggling when mounted on speed booster and no adjustments are required to fit your lens. Both the camera-side and the lens-side of the speed booster are made of brass which is precision-machined and chrome-plated.

The Speed Booster uses matte-black treatment to keep internal reflection to a minimum in order to maintain the maximum optical quality possible with the lens. The exterior features a black satin surface finish.

The speed booster features a detachable tripod foot which is compatible with Arca Swiss, Markins, Photo Clam ball heads.

Related Questions and Answers

Q: 1. Can I use yashica adapter in front speed buster to mount my yashica lenses

A: If your Yashica lenses have a Canon EF mount and are Full Frame lenses the Metabones Canon EF Lens to Blackmagic 2.5k Cinema Camera T Speed Booster (Micro 4/3 Mount) would work for your needs. Also, the Metabones adapter is designed to work with Native Canon EF mount lenses. Using an additional adapter may change the field of view.

Q: 2. Would anyone happen to know if this would possibly work on the Blackmag Pocket Cinema Camera 4K that is coming out in September?

A: Metabones has not yet announced compatibility for their products and the new Pocket camera.

Q: 3. Does Metabones make a product that will allow me to use my Nikon full frame lenses on the Production Camera 4K and the URSA while speed boosting and changing the crop factor?

A: Speedboosters work when you have a small sensor, larger format lens and a short lens flange depth like a MFT or E-mount. (Flange depth being the distance from the lens mount to the sensor). It takes the large image and squeezes it down to the smaller sensor. In the process of squeezing, it concentrates the light making the image brighter. Genius! Why this was not thought of years ago, I do not know since it is actually the process of a tele converter in reverse.However, this process does not work when you have a larger size sensor and long flange depth like you have with the BM 4K and it's EF or PL mount. If you had such a Speedbooster, the image would not reach the sensor properly and thus is would not be in focus. I am not a camera designer but what I think would be needed is a BM 4K with a MFT or E mount.

Q: 4. Is this the best speed booster for the new BMPCC 4K?

A: It is not. Metabones is recommending the standard EF to MFT Adapters for the Pocket Cinema 4K, not the specific models to past Blackmagic Cameras. B&H # MESPEFM43BT4 which is the Metabones T Speed Booster Ultra 0.71x Adapter for Canon Full-Frame EF-Mount Lens to Micro Four Thirds-Mount Camera would be the better choice. https://bhpho.to/2btYL9H

Q: 5. Will this work With The Blackmagic Pocket 4K camera?

A: Not that we are aware of, this adapter is specifically for the older Cinema Camera 2.5K MFT. Instead we recommend the Metabones Speed Booster Ultra 0.71x Adapter for Nikon G Lens to Micro Four Thirds-Mount Camera, B&H # MESPNFGM43B3. https://bhpho.to/2mFmebJ

Q: 6. I use this metabones on black magic pocket cinema camera 4k?

A: Not that we are aware of. This adapter is for the Blackmagic 2.5k Cinema Camera with an MFT mount, it is camera specific. Instead we recommend B&H # MESPEFM43BT4, which should work with the Pocket Cinema Camera 4K to adapt EF lenses. https://bhpho.to/2btYL9H

Q: 7. Is this adapter work For the new black magic pocket cinema camera 4k ?

A: This is for the older Cinema Camera 2.5K with an MFT mount. For the new Pocket Cinema Camera 4K you will need BH #MESPEFM43BT8 instead. https://bhpho.to/3b76BCn

Q: 8. How do I know what my f-stop is?

A: You need to calculate depending of your lens.If you have a f2.0, the Speed Booster brings it to a f1.4 equivalent, which is your 0. Then from there you get f2.0 with F at 1 on the Speed Booster, then f2.8,4 etc...

Q: 9. will this work with the black magic mico cinema camera??

A: Yes the Metabones Canon EF Lens to Blackmagic 2.5k Cinema Camera T Speed Booster (Micro 4/3 Mount) will fit onto the Blackmagic Micro Cinema Camera since the camera uses a Micro 4/3 Mount.

Q: 10. Will this work on a Z-Cam E2?

A: Yes, the following adapter will work with you Z-cam unit