Metabones T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera

Metabones T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera

Metabones T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera

B&H # MEEFEBT4 MFR # MB_EF-E-BT4
No Longer Available

Product Highlights

  • Canon EF or EF-S Lens to Sony E Body
  • Third Party EF or APS-C EF to Sony E
  • Supports Electronic Communication
  • Enables Use of Lens Autofocus
  • Enables Lens Aperture and Stabilization
  • Adapter Interior Minimizes Reflections
  • Locking Mechanism to Secure Lens
  • Push-Button Lens Release
  • Brass Mounting Rings
  • Detachable Tripod Foot
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Metabones MB_EF-E-BT4 Overview

  • 1Description

The T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera from Metabones allows a Canon EF or EF-S mount lens to be mounted onto a Sony E-mount camera. While doing so, the adapter is designed to support electronic communication between an attached camera and lens. If the lens includes autofocus, image stabilization, as well as camera-controlled aperture functions, this adapter is intended to allow those features to be used. If an attached lens is also capable of generating EXIF metadata when used with a directly compatible camera, the T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera is designed to allow that information to be saved along with image files generated with a combination of the lens, a Sony E-mount camera, and the adapter.

By enabling camera-controlled aperture functions for a Canon EF or Canon EF-S Mount Lens when used with a Sony E-mount camera, program, shutter-priority, aperture-priority, as well as manual modes can be set and used through the camera. Power for these functions is transferred from the camera to the lens, and the T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera is designed to accomplish this in an energy-efficient manner. When manual focusing is preferred with a compatible electronic lens, an integrated switch can be depressed which opens the lens's aperture diaphragm to it largest setting. The resulting shallow depth-of-field can then be used to help ensure focus accuracy.

When an image is taken with the T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera, a matte black internal coating minimizes the potential for reflections within the adapter barrel, which could otherwise result in unwanted glare within the image. The adapter barrel also features a wide internal diameter to support the movements of compatible tilt-shift lenses.

The T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera is constructed from aluminum alloy for durability while minimizing weight. Its mounting rings are made with brass to further prevent wear-and-tear, and a detachable tripod foot is included that features 3/8" threads as well as compatibility with Arca-Swiss tripod heads.

While Canon EF-S or third-party APS-C EF-mount lenses may be used with the T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera, vignetting may occur when such lenses are combined with this adapter and a Sony E-mount camera with an APS-C sized sensor. Canon EF-S and third-party APS-C EF lenses are designed to project an image onto sensors measuring 22.3 x 14.9mm, while Sony E-Mount APS-C cameras feature sensors that measure 23.5 x 15.6mm.

The T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera can be used to connect Canon EF or third-party "full-frame" EF-mount lenses to a Sony E-mount camera with a "full-frame" sensor without vignetting. It may be used to adapt Canon EF-S or third-party APS-C EF-mount lenses to a "full-frame" Sony E-mount camera as well. However, Sony E-mount cameras with a "full-frame" sensor must be set to "crop mode" when combined with this adapter and Canon EF-S or third-party APS-C EF-mount lenses to avoid generating images with vignetting.

  • Allows a Canon EF or EF-S mount lens to be used with a Sony E-mount camera
  • Allows third-party, full-frame or APS-C EF-mount lenses to be used with a Sony E-mount camera
  • Supports electronic communication between camera and lens to enable autofocus, image stabilization, on-camera aperture control, and EXIF metadata generation when possible
  • Internal coating minimizes reflections within the adapter barrel
  • Wide internal barrel diameter facilitates the use of tilt-shift lenses
  • Integrated switch fully opens aperture diaphragm on compatible electronic lenses to help ensure focus accuracy
  • Detachable, Arca-Swiss compatible tripod foot with 3/8" threads
  • Aluminum-alloy components for weight reduction
  • Brass mounting rings further prevent wear-and-tear
  • Locking mechanism for secure attachment of lens with push-button release
In the Box
Metabones T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera
  • Front Cap
  • Rear Cap
  • Tripod Foot Key
  • Limited 1-Year Warranty
  • Table of Contents
    • 1Description

    Metabones MB_EF-E-BT4 Specs

    Compatibility Canon EF or EF-S mount lens to Sony E-mount camera
    Dimensions 2.6 x 1.2" (6.7 x 3.1 cm)
    Weight 5.3 oz (150.0 g)
    Packaging Info
    Package Weight 0.5 lb
    Box Dimensions (LxWxH) 4.3 x 4.3 x 2.4"

    Metabones MB_EF-E-BT4 Reviews

    T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount Camera is rated 3.7 out of 5 by 247.
    Rated 1 out of 5 by from Horrible! works half the time, focusing works for about 2 minutes then you have to remove the whole lens and put back on. Very disappointed.
    Date published: 2018-09-15
    Rated 5 out of 5 by from I would like to buy this produt again and again Great adapter but is too expensive but is work what I doing
    Date published: 2017-10-31
    Rated 4 out of 5 by from Great to have but can be finicky I get a lot of F-- errors from just carrying the camera around. Have to Reconnect to get aperture back. STM lens havent been that great, 40mm and 50mm stm. 17-40 is great 85mm 1.8 is great 70-200 2.8IS II is great sigma 35 1.4 is great canon 200 2.8 is good older 400mm 2.8 version 2 non-is is good, just not great with AF-C mode Tamron 150-600 ver1 is alright
    Date published: 2017-08-31
    Rated 5 out of 5 by from Thank you! Thank you!
    Date published: 2017-08-23
    Rated 5 out of 5 by from 10 puntos 10 puntos
    Date published: 2017-08-04
    Rated 4 out of 5 by from Nice adapter Allows the use of EF lenses on my Sony FS5. Works fine with auto-aperture - not auto focus on this camera.
    Date published: 2017-08-02
    Rated 5 out of 5 by from Perfect This adapter was just what I was looking for. I have a new Sony camera and needed to be able to mount my lens from my Canon. It is perfect. The best thing is now I can film with both cameras. Happy camper!
    Date published: 2017-06-28
    Rated 5 out of 5 by from It works! I purchased this adapter for my Sony 7ii (and a Canon EF 28-135 lens to go with it). The adapter works as advertised out of the box, without a problem. All focal lengths appears in the viewfinder as you are zooming and also appear correctly in EXIF information recorded in the files. Updating the Metabones adapter was quick and easy. A good purchase.
    Date published: 2017-05-19
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    question

    I know that auto focus is supported on this (metabones IV adapter) but does it support continuous focus in video mode?
    Asked by: Peter G.
    It will be extremely slow and inaccurate. Autofocus is worthless on these adapters.
    Answered by: Todd K.
    Date published: 2018-08-26

    question

    I have an A7s II and Canon f/4 lenses so I don't need this for extra frame size but ideally to boost aperture. Would getting the speedbooster $650 version do anything noticeably to the already full frame image? Thanks!
    Asked by: Michael W.
    Getting the 0.71x SpeedBooster version of this adapter would just increase the aperture by 1 stop.
    Answered by: Kirk R.
    Date published: 2018-08-26

    question

    will it work for Canon 24-70mm f/2.8 L (bought it at Dec 2006) on a7R2?
    Asked by: Ji A.
    Sure. It works with all ef mount Canon lenses. I use that let's as well as 24-105mm f/4.0 let's with this adapter and my a7sii all the time
    Answered by: Maurice N.
    Date published: 2018-08-26

    question

    The adapter doesn't seem to work with my Sigma 17-70mm lens for Canon. Why is that?
    Asked by: Cody H.
    Hey. How are you doing?Well then. This adapter only works out to connect canon lenses to an E Mount Sony camera, like the alphas 6300/ 7 RII/ next series... and still have the benefit of having lens functions controlled by camera. They are specifically designed to fit canon lenses to E mount Sony camera body. Your sigma lens will do if it is canon compatible, what seems to be your case.
    Answered by: Wilson d.
    Date published: 2018-08-26

    question

    How does work contrast video AF on Sony A7S with EF lenses (Tamron 24-70, 70-200 Tamron)?
    Asked by: Anonymous
    Video AF with non sony lenses works, but isn't as smooth as native lenses.
    Answered by: Derek A.
    Date published: 2018-08-26

    question

    Metabones T Smart Adapter Mark IV for Canon EF or Canon EF-S Mount Lens to Sony E-Mount CameraIs this product compatible with both the Sony A7 and the Tokina 10-17 mm canon lens?
    Asked by: Anonymous
    Can't guarantee function with non canon lenses, however I've used this adapter with Sigma lenses, as well as a JAS Contax 645 adapter (C645 > EF) without and issues of function. if it works with canon it should work with your A7. That being said, a full list of compatibility is available on the Metabones site.
    Answered by: Derek A.
    Date published: 2018-08-26

    question

    Will this work with a sony a6500 and tokina 10-17mm fisheye? Any issues with focus?
    Asked by: LINDA
    This will work with the A6500 and any lens that has a Canon EF or EF-S lens mount.
    Answered by: Timothy D.
    Date published: 2018-08-26

    question

    is there glass in this adapter?
    Asked by: Anonymous
    No
    Answered by: Brice M.
    Date published: 2018-08-26
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    Customer Photos

    Metabones MB_EF-E-BT4 Q&A

    Metabones MB_EF-E-BT4 Accessories

    Designed For Use With:

    • Hasselblad Lunar
    • Sony Alpha A5000
    • Sony Alpha A5100
    • Sony Alpha A6000
    • Sony Alpha A6300
    • Sony Alpha A6500
    • Sony Alpha A7
    • Sony Alpha A7 II
    • Sony Alpha A7R
    • Sony Alpha A7R II
    • Sony Alpha A7S
    • Sony Alpha A7S II
    • Sony Alpha NEX-7
    • Sony NEX-FS700R E-Mount
    • Sony PXW-FS7 E-Mount
    • Sony QX1
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