Firmware Update 0.40 for Metabones Smart Adapter IV adds Sony A7II Support


Metabones Smart Adapter IV (B&H) Firmware Update 0.40 adds support for Sony A7II 5-axis or 3-axis stabilization. Sony A7II users will definitely want this update – but it’s a good upgrade for other users too.

Get the latest Firmware update for Metabones EF-E Smart Adapter Mark IV: MAC | WIN


Name: Firmware update V0.40 for EF-E Smart AdapterTM MARK IV
Release date: 3 Feb 2015


• Support Sony A7II with 5-axis or 3-axis stabilization (refer to the following table for stabilization support in Sony A7II).


• In “Green” mode, wide open button on adapter serves double-duty as assignable “Focus hold” button found on Sony G series lenses. You may for example assign “Aperture Preview” to the the “Focus Hold” button on A7II and get the same DOF preview function as on a Canon DSLR. Image Stabilization ON/OFF status is displayed on A7II as the SteadyShot icon. “‹
• Adds support for Sony A7s silent shutter mode.
• Fixed Sony A7s intermittent startup issue.
• More detailed EXIF data.
• Reliability improvements with some Sigma and Tamron lenses.
• Fixed distance display (in Advanced mode) on VG, FS and A7 series.
• Fixed EF70-200/2.8L IS II USM’s IS on/off switch intermittently inoperative issue.
• Fixed issue of EF40/2.8 STM being wrongly identified as an OSS lens.
• Fixed NEX-5N becoming unresponsive issue when movie capture started


Name: Firmware update V0.39 for EF-E Smart AdapterTM MARK IV
Release date: 29 Dec 2014
Benefits and improvements
“‹Improves Sony A7S compatibility

Name: Firmware update V0.37 for EF-E Smart Adapter MARK IV
Release date: 20 Nov 2014
Benefits and improvements
Improves stability with some lenses

Name: Firmware update V0.36 for EF-E Smart Adapter MARK IV
Release date: 31 Oct 2014
Benefits and improvements
E mount ver 0.36
Fixes Zeiss ZE lens stability issue with adapter firmware version 0.33 and version 0.34″‹

Name: Firmware update V0.34 for EF-E Smart Adapter MARK IV
Release date: 8 Oct 2014
Benefits and improvements
Bug Fix and Improve the performance.
Fix Auto-Magnify/MF function on advance mode.

Name: Firmware update V0.32 for EF-E Smart AdapterTM MARK IV
Release date: 14 Aug 2014
Benefits and improvements
Sony A7S compatibility



Apple Mac OS X 10.9 Mavericks or later


Windows Vista SP2
Windows 7 SP1
Windows 8
Windows 8.1


• When performing the firmware update, please don’t disconnect the USB cable, otherwise, the adapter may become inoperable due to the sudden power shutdown
• Don’t connect the adapter to any camera and lens when performing the firmware update.
• Make sure that you are logged on as a user with administrative rights.
• Read the disclaimer and click to agree to the terms and conditions. Then, click on the Download button.
• The download of the [MAC: MetabonesApp.dmg] or [WIN: MetabonesApp.exe] file will start.
• Save the file to the desktop of your computer (recommended).


Once the file has downloaded successfully, you’re ready to upgrade the Firmware update for the Smart Adapter MARK IV.

STEP 1: START UP THE Metabones App

• Close all currently running programs on your computer.
• Double-click the [MAC: MetabonesApp.dmg] or [WIN: MetabonesApp.exe] download file to start the Metabones App.
• Connect your the Smart Adapter MARK IV to the computer by using the USB-MicroUSB cable that came with your Sony camera.
• Then, follow the instructions in the Metabones App to update the firmware.


• Only connect the adapter – REMOVE the camera and lens
• Connect a USB cable to USB port behind the lens release lever
• Once adapter connected via USB, the app will tell you if an update is available.
• If an update is available, follow the prompts:
• Unplug USB – Press and Hold Button (center of photo above) – then reconnect USB to start the update.
• DO NOT disconnect until the Update is finished.

You’ll get a screen prompt telling you once Firmware has successfully updated and you’re done.

PLEASE NOTE: I strongly advise using the USB-MicroUSB cable that came with your Sony camera – other cables may not work.

Related Posts:

Metabones Smart Adapter IV for Sony A7/A7R/A7S/A7II
Photography Gear Guide: Sony Lens Mount Adapters
Guide to Sony A7 / A7R / A7S / A7II Lens Mount Adapters – Part 1

Sony-a7-Snapshots-bookFor more tips and tricks about getting the most out of your Sony a7 series camera, check out my new book ‘Sony a7-Series: From Snapshots to Great Shots’.
It’s your guide to all of the Sony a7-Series cameras including the new a7RII. While the camera manual explains what the camera can do, it doesn’t show how to use the camera to create great images! Starting with the Top Ten things users need to know about the cameras, author Brian Smith, a Pulitzer Prize-winning photographer and Sony Artisan of Imagery, carefully guides you through the operating features of Sony a7, a7R, a7S, a7II and a7RII and how to use them. Get practical advice from a pro on which settings to use when, great shooting tips, and assignments at end of chapter to practice what you’ve just learned.

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