Metabones EF to E (Mark IV)

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The adapter is powered by the camera body, so external power is required. It also has a detachable foot compatible with ball heads by makes such as Arca Swiss, Markins and Photo cam. As a useful addition, the adapter has the reverse of a depth-of-field preview function which opens the aperture fully, allowing for easy focusing. Improvements of the Mark IV version over its predecessor the EF-E-BM3 include a larger inner hole allowing for greater tilt and shift flexibility as well as improved dulling of the black inner surfaces to counteract internal reflections.

Kit includes


True electronic integration of aperture diaphragm - let camera automatically choose aperture in P or S exposure modes, or dial in yourself on the camera body in A or M modes.

Powered by camera body. No external power source required.

Wide open button (opposite of depth-of-field preview function) makes manual focusing easy.

The tripod foot is detachable and compatible with Arca Swiss, Markins, Photo cam ball heads.

High performance 32-bit processor and efficient switched-mode power supply.

Technical Specifications

  EF lenses (see below for list of tested lenses)
  EF-S lenses (see note 1)
  Image stabilization (IS)
  Electronic manual focusing (e.g. EF 85/1.2L II and discontinued EF 50/1.0L)
  EXIF (focal length, aperture, zoom range)
  P, A, S, M exposure modes
  Autofocus (see autofocus support section below)
  Distance and zoom display on VG and FS series camcorders (see note 3)
  Auto magnify (see note 2)
  Contax N mount lenses modified to Canon EF by Conurus
  Contax 645 NAM-1 adapter modified to Canon EF by Conurus
  Sigma, Tamron and Tokina lenses in Canon EF mount (see note 3)
Not Supported  
  Lens correction such as peripheral shading, CA and distortion
  Focus confirmation "chip" (e.g. Dandelion)
  Stacking another lens mount adapter on top (see note 4)
Notes Vignetting at corners may occur for certain EF-S lenses because they are designed to cover a 1.6x crop image circle but Sony NEX has a 1.5x crop sensor.
  Requires lenses supporting distance information.
  A third party zoom lens may need to be registered with the Smart Adapter first in order to detect its maximum aperture. Autofocus is disabled for most third-party lenses.
  For example, some improperly-made M42 screw mount adapters may cause a short-circuit with the electronic contacts of the Smart Adapter and cause damage to the Smart Adapter and/or camera body.
Tested Camera Bodies  
  A7 (Mark IV supports auto "APS-C Size Capture" with EF-S lens)
  A7R (Mark IV supports auto "APS-C Size Capture" with EF-S lens)
  NEX-FS700 (autofocus works only in photo mode, but is disabled in movie capture mode)
  NEX-FS100 (autofocus works only in photo mode, but is disabled in movie capture mode)
  NEX-VG900 (Mark IV supports auto "APS-C Size Capture" with EF-S lens)
Tested Lenses (The following lenses have been tested for autofocus operation. Minimum firmware version required shown in parentheses).
  Canon EF primes
  EF 14/2.8L II USM
  EF 24/1.4L II USM
  EF 24/2.8 IS USM
  EF 35/1.4L USM (Ver.19)
  EF 50/1.2L USM
  EF 85/1.2L II USM
  EF 85/1.8 USM (Ver.18)
  EF 100/2.8 USM macro (Ver.17)
  EF 135/2L USM (Ver.17)
  EF 200/2.8L II USM (Ver.17)
  EF 300/2.8L IS USM
  Extender EF 1.4x III
  Extender EF 2x (mark I)
  Canon EF zooms
  EF 8-15/4L USM fisheye
  EF 17-40/4L USM
  EF 20-35/2.8L (Ver.18)
  EF 22-55/4-5.6 USM
  EF 24-70/2.8L USM II
  EF 28-80/3.5-5.6 II (Ver.18)
  EF 28-90/4-5.6 III
  EF 35-350/3.5-5.6L (Ver.18)
  EF 70-200/2.8L IS USM II
  EF 70-200/4L USM
  EF 70-200/4L IS USM
  EF 70-300/4-5.6L IS USM
  EF 70-300/4-5.6 IS USM
  EF 100-300/5.6 (non-L, not USM, push-pull zoom) (Ver.18)
  EF 100-400/4.5-5.6L IS USM
  Canon EF-S
  EF-S 10-22/3.5-4.5 USM
  EF-S 17-55/2.8 IS USM
  EF-S 17-85/4-5.6 IS USM
  EF-S 18-55/3.5-5.6
  EF-S 18-55/3.5-5.6 IS
  EF-S 18-135/3.5-5.6 IS
  EF-S 60/2.8 macro USM
  Sigma DC
  17-70/2.8-4 DC OS HSM (Ver.15)
  30/1.4 DC HSM old version (Ver.18)
  SP 24-70/2.8 Di VC USD A007 (Ver.15)
  SP 70-200/2.8 Di VC USD A009 (Ver.31)
  Tokina (full frame)
  28-80/3.5-5.6 (Ver.18)
  Tokina DX
  AT-X PRO SD 11-16/2.8 (IF) DX (Ver.15)
Manual Focus Only  
  The following lenses have been tested with previous firmware versions with manual focus, aperture control, image stabilization (if applicable) and EXIF support. Autofocus is supported only for those lenses marked with an asterisk (*) on NEX-5R/6
  Canon EF primes
  EF 14/2.8L (mark I)
  EF 20/2.8 USM*
  EF 24/1.4L USM (mark I)
  EF 24/2.8 (old version, non-IS)
  TS-E 24/3.5L
  TS-E 45/2.8
  EF 50/1.4 USM
  EF 50/1.8 II
  MP-E 65/2.8 macro
  EF 85/1.2L (mark I)
  EF 400/5.6L USM
  Canon EF zooms
  EF 24-70/2.8L (mark I)
  EF 24-105/4L IS USM*
  EF 28-70/3.5-4.5 II
  EF 35-80/4-5.6
  Contax N modified by Conurus
  Vario-Sonnar 17-35/2.8
  Vario-Sonnar 24-85/3.5-4.5
  Vario-Sonnar 28-80/3.5-5.6
  Planar 50/1.4
  Planar 85/1.4
  Makro-Sonnar 100/2.8 (Ver.21)
  NAM-1 adapter
  Sigma (full frame)
  24-70/2.8 EX HSM
  24-70/2.8 EX DG HSM
  50/1.4 DG HSM (Ver.17)*
  50/2.8 DG Macro
  70-200/2.8 EX DG Macro HSM
  Sigma DC
  12-24/4.5-5.6 EX ASPH
  17-35/2.8-4 EX HSM ASPH
  18-125/3.5-5.6 DC OS HSM
  30/1.4 EX DC HSM new version (Ver.17)
  18-270/4.5-6.3 VC
  SP 28-75/2.8
  SP 70-200/2.8 Di LD A001
  AT-X PRO 28-70/2.8
  Zeiss ZE
  This Smart Adapter is also compatible with fully manual lenses which have no electrical contacts.

Case Studies

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