• Increase maximum aperture by 1 ²/₃stop. (with a maximum output aperture of f/0.74)
• Increase MTF.
• Makes lens 0.58x wider.
• Optics with 6 elements in 4 groups, designed by Caldwell Photographic in the USA (patent granted).
• Build-in electronics to control lens aperture.
• The Lens aperture is set by the controls on the camera body.
• Powered by camera body. no external power source required.
• High-performance 32-bit processor and efficient switched-mode power supply.
• The tripod foot is detachable and compatible with Arca Swiss, Markins and Photo Clam ball heads.
• Flocking material coating inside the inner hole to reduce the internal reflection.

Optics designed by Caldwell Photographic in the USA.

Canon EF to BMPCC T Speed Booster^TM  adapters designed exclusively for the original Blackmagic Pocket Cinema Camera (BMPCC), Blackmagic Mirco Cinema Camera (BMMCC) and Blackmagic Micro Studio Camera 4K (BMMSC 4K). They cannot be attached to any JVC, Olympus or Panasonic cameras and they cannot be used with the newly released Blackmagic Pocket Cinema Camera 4K.

The new 0.58x Speed Booster reduces the crop factor of the BMPCC from 3.02x to 1.75x and produces the largest aperture optics currently available, with a maximum output aperture of f/0.74. 

Here are a few examples:

Master Lens	with Speed Booster 0.58x	35mm equivalent focal length  on BMPCC  *
Canon 85mm f/1.2	49.3mm f/0.74	148.9mm	extremely fast tele
Sigma 18-35mm f/1.8	10.5-20.3mm f/1.0	30.7-61.3mm	super fast and stunningly sharp zoom
Sigma 8-16mm f/4.5-5.6	4.6-9.3mm f/2.6-3.2	14-27.8mm	super wide zoom
Sigma 30mm f/1.4 Art	19.3mm f/0.81	58.3mm	super fast and sharp standard lens
Tokina 11-16mm f/2.8	6.4-9.3mm f/1.6	19.3-27.8mm	very fast and sharp wide-angle zoom
*) Based on diagonal field of view

 

Table of compatibility and resulting crop factors with different SpeedBooster^TM:

Supported

Not supported

EF lenses BMPCC (original version only), BMMCC and BMMSC 4K Image stabilization (IS) lenses Autofocus (from firmware V2.1)  Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L) EXIF (focal length, aperture, zoom range) Distance and zoom display on BMPCC camcorders (see note 1) Contax N mount lenses modified to Canon EF by Conurus (see note 2) Contax 645 NAM-1 adapter modified to Canon EF by Conurus (see note 2) Sigma, Tamron and Tokina lenses in Canon EF mount (see note 2)

EF-S lenses GH5, GH5s, GH4, GH3, GH2, GH1 BMPCC 4K Lens correction such as peripheral shading, CA and distortion Focus confirmation "chip" (e.g. Dandelion) M42 screw mount adapters (see note 5) Stacking non-Metabones/non-Conurus mount adapters on top (see note 6 and list of lenses which require modification below.) Lens: Tamron SP 17-50mm F/2.8 XR Di II VC

Note:

1. Requires lenses supporting distance information.
2. A third party zoom lens may need to be registered with the Speed Booster/Smart Adapter first in order to detect its maximum aperture. 
3. This Speed Booster is designed to cover a BMPCC image circle which is not big enough to cover a full-size 36mm x 24mm sensor.

4. For use with fast lenses (faster than f/1.8), the pre-boost apertures will be displayed in the camera.

   Slow lenses will report boosted apertures to the camera body but fast lenses will report pre-boost apertures. We won't show f/0.7 with a f/1.2 lens attached, but show f/1.2 instead. 

   Example:

   a) EF 85/1.2L attached, camera display = f/1.2, physical aperture  (lens + Speed Booster combined) = f/0.74.
   b) Sigma 18-35/1.8 attached, camera display = f/1.0, physical aperture (lens + Speed Booster combined) = f/1.0.

5. Some improperly-made M42 screw mount adapters may short the electronic contacts of the Speed Booster and cause damage to the Speed Booster and/or camera body.
6. Many manual focus lenses (e.g. OM 28/2.8, OM 50/1.8, Leica R 15/3.5) have rear protrusions (spikes, levers, other appendages) which would damage the optics and/or housing of Speed Booster^TM They need to be modified before they can be safely used on Speed Booster^TM Check and make sure there are no rear protrusions from the adapter/lens combination before using on Speed Booster. Scratches and damages caused by rear protrusions on Speed Booster^TM are not covered by warranty.
7. This Speed Booster is NOT fully compatible with GH5 or other MFT camera. This is used only with BMPCC, BMMCC and BMMSC4K. When Speed Booster® is used with other MFT camera, it may cause damage to the camera.

List of lenses (have been tested by metabones) with support on EF-BMPCC Speed Booster. (Lenses which have been tested with EF-E Speed Booster may refer to EF-E Speed Booster product page.)

Canon EF zooms Canon 20-35mm3.5-4.5 Canon 28-80mm2.8-4L Canon 70-200mm2.8L Canon 24-70mm2.8_II Canon 24-105mm4_L Canon 70-200mm4_L Canon 70-300mm4-5.6L Canon 70-300mm4-5.6	Canon EF primes Canon 50mm1.8 Canon 50mm1.4 Canon 85mm 1.2 Canon 100mm 2.8
Others Sigma 18-200mm3.5-6.3 Zeiss 35mm2

List of manual focus lenses which REQUIRE MODIFICATION to be used on Speed Booster

Many manual focus lenses have rear protrusions (spikes, levers, other appendages) which would damage the optics and/or housing of Speed Booster^TM They need to be modified before they can be safely used on Speed Booster^TM Check and make sure there are no rear protrusions from the adapter/lens combination before using on Speed Booster. Scratches and damages caused by rear protrusions or by poor quality adapters are not covered by warranty. The following is an incomplete list of lenses known to be incompatible.

Leica R Super-Elmar-R 15mm Elmarit R 28/2.8 Elmarit R 35/2.8 Summicron R 50/2

Nikon F 20/2.8 AI-S

Olympus OM OM 18/3.5 OM 21/2 OM 21/3.5 OM 28/2.8 OM 50/1.8

Pentax K Every Pentax K-mount lens has a protruding fin and an aperture lever. It does NOT fit.

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