• Increase maximum aperture by 1¹/₃ stop. (with a maximum output aperture of f/0.80)
• Increase MTF.
• Makes lens 0.64x wider.
• Optics designed by Caldwell Photographic in the USA (patent granted).
• When using with "passive" (without electronic control pin) MFT camcorders/cameras, such as BMCC 2.5K MFT and Digital Bolex D16 MFT, the Speed Booster must be powered by external power source via Micro-USB socket. Input Voltage is 5V DC.  (Battery is NOT included in the box).
• When using with "active" (with electronic control pin) MFT camcordrs/cameras, such as BMPCC MFT, the Speed Booster can be powered by camera body. no external power source required.
• Build-in electonics to control lens aperture. 
• The Lens aperture is set by the dial button on the adapter.
• High performance 32-bit processor and efficient switched-mode power supply.
• The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo Clam ball heads.
• Flocking material coating inside the inner hole to reduce the internal reflection.

 

Disclaimer: we are NOT licensed, approved or endorsed by Micro Four Thirds or Canon

 

Canon EF to BMCC mount T Speed Booster^TM  adapters designed exclusively for the Blackmagic 2.5k Cinema Camera (BMCC). Note that the new Speed Boosters will only attach to Blackmagic cameras equipped with a Micro-4/3 mount.  They cannot be attached to standard Micro 4/3 cameras.

The new 0.64x Speed Booster reduces the full-frame crop factor of the BMCC from 2.39x to 1.53x, thus effectively transforming it into a Super-35 format cine camera.  In addition, the speed of any attached lens is increased by 1¹/₃ stops, with a maximum output aperture of f/0.80.  

Here are a few examples:

Master Lens	with Speed Booster 0.64x	35mm equivalent focal length  on BMPCC  *
Canon 85mm f/1.2	44.4mm f/0.90	106.1mm	extremely fast tele
Sigma 18-35mm f/1.8	11.52-22.4mm f/1.35	27.5-53.5mm	super fast and stunningly sharp zoom
Sigma 8-16mm f/4.5-5.6	5.1-10.2mm f/3.4-4.2	12.2-24.4mm	super wide zoom
Tokina 11-16mm f/2.8	7.0-10.2mm f/2.1	16.7-24.5mm	very fast and sharp wide-angle zoom
*) Based on diagonal field of view

 

Table of compatibility and resulting crop factors:

Supported

Not supported

EF lenses BMCC 2.5K*, BMPCC and Digital Bolex* D16 MTF camcorders Image stabilization (IS) lenses Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L) on BMPCC EXIF (focal length, aperture, zoom range) on BMPCC Distance and zoom display on BMPCC (with active MFT mount) camcorder (see note 1). However, this feature is not for BMCC 2.5K. 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)

Autofocus EF-S lenses GH4 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 an BMCC 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. This Speed Booster may NOT be fully compatible with GH4 or other MFT camera. This is use only with BMCC or BMPCC. When Speed Booster® is used with other MFT camera, it may cause damage on the camera.

 

Disclaimer: we are NOT licensed, approved or endorsed by Micro Four Thirds or Canon.

Optics designed by Caldwell Photographic in the USA (patent granted)

Remark: Your PayPal receipt is your order confirmation. There is no separate email confirmation until shipment takes place.

 

Lens Compatibility List

Compatible Lenses	Incompatible Lenses
Canon CN Cinema Lens Canon EF Lens Canon EF Extender  Carl Zeiss ZE Lens Sigma EF Lens Tamron EF Lens Tokina EF Lens Contax N lenses modified by Conurus Canon EF Extender 1.4x (all versions) Canon EF Extender 2x (all versions)	Laowa 200mm F/2.0 Samyang AF 85mm F/1.4 Tamron 70-300mm F/4-5.6 VC USD A005 Tokina Opera 50mm F/1.4 Yongnuo 50mm F/1.8
	Limitations
	No Lens OIS/VC Support Tamron SP 15-30/2.8 VC USD A012  Tamron 150-600mm F/5-6.3 VC USD A011  Tamron 28-300mm f/3.5-6.3 XR Di Macro A06    Cannot zoom to widest position even after modification Canon EF-S 18-135mm F/3.5-5.6 IS STM Canon EF-S 18-135mm F/3.5-5.6 IS USM (Nano)    No AF Support Tamron SP 17-50mm F/2.8VC B005 Tamron 28-300mm F/3.5-6.3 VC A20 Sigma 18-125mm F/3.5-5.6DC OS HSM    AF may not be accurate Canon EF 50mm f/1.8 II  Canon EF 28-70mm f/3.5-4.5 II Sigma 50mm f/1.4 EX HSM Tamron 18-250mm f/3.5-6.3 Di II Macro A18 Tamron 24-70mm f/2.8 VC USD A007 Tamron 28-300mm f/3.5-6.3 XR Di Macro A06 Tokina AT-X PRO 11-16mm f/2.8 DX (I)

 

Unsupported List

Canon-brand EF-S lens require modification to fit or may remain incompatible even after modification Native teleconverters will not fit Lens correction such as peripheral shading, CA and distortion  Focus confirmation "chip" (e.g. Dandelion) M42 screw mount adapters (see note 3) Stacking non-Metabones/non-Conurus mount adapters on top (see note 3 and list of lenses which require modification below.)

 

Notes:

Note(1) CN-E Compact-Servo lens with some cameras may require external power to autofocus.

Use of Canon Compact-Servo Cinema lenses such as CN-E 18-80mm T4.4 for still photography is not supported. (May be functional, but much slower than lenses designed for still photography.)

Note(2) With fast lenses (faster than f/1.4), the pre-boost apertures will be displayed in the camera.

Note (3) Some improperly-made M42 screw mount adapters may short the electronic contacts of the Speed Booster/ Smart Adapter and cause damage to the adapter and/or camera body.

 

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^® They need to be modified before they can be safely used on Speed Booster^® 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.