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Viltrox EF-M1 Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Micro Four Thirds Camera

BH #VIEFM1 • MFR #EF-M1
19 reviews
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Viltrox EF-M1 Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Micro Four Thirds Camera
Key Features
  • Canon EF or EF-S-Mount Lens to Micro Four Thirds Camera
This Lens Mount Adapter from Viltrox is designed to allow a Canon EF or EF-S-mount lens to be used with a Micro Four Thirds camera with full electronic communication. The underside of this adapter's detachable tripod foot is tapped with a 1/4"-20 accessory thread, providing direct attachment to tripods or quick release plates that feature 1/4"-20 mounts. For ease of upgrading its firmware, this adapter also includes a micro-USB port.
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Viltrox EF-M1 Overview

This Lens Mount Adapter from Viltrox is designed to allow a Canon EF or EF-S-mount lens to be used with a Micro Four Thirds camera with full electronic communication. The underside of this adapter's detachable tripod foot is tapped with a 1/4"-20 accessory thread, providing direct attachment to tripods or quick release plates that feature 1/4"-20 mounts. For ease of upgrading its firmware, this adapter also includes a micro-USB port.

  • Supports electronic communication between camera and lens to enable autofocus when possible
  • Detachable tripod foot with 1/4"-20 accessory thread for direct attachment to tripods or quick release plates that feature 1/4"-20 mounts
EAN: 6953400312911

Viltrox EF-M1 Specs

Item Type
1x Lens Mount Adapter
Camera Compatibility
Micro Four Thirds Mount
Lens Compatibility
Canon EF/EF-S Mount
Electronic Communication
Yes
Included Shims
Inputs/Outputs
1x Micro-USB Firmware Update Input
Mounting
Tripod Mount: 1/4"-20 Female Thread
Materials
Metal
Dimensions
Diameter: 2.64" / 67.06 mm
Depth: 0.98" / 24.89 mm
Weight
4.1 oz / 115 g
Packaging Info
Package Weight
0.57 lb
Box Dimensions (LxWxH)
4.8 x 3.9 x 2.7"

Viltrox EF-M1 Reviews

Works well with Blackmagic Pocket 4k

By Paul
Rated 4 out of 5
Date: 2026-10-09

Using this to get multiple vintage as well as USM Canon EF mount lenses onto my B Camera - Blackmagic Pocket 4k. Iris adjustments work well. As we all know autofocus on BM cameras is wanting so not able to provide insight there. Of course adapting Full frame lenses to Micro 4/3 does impact focal lenght. All is well and works good

Just Perfect for the Blackmagic 4k

By Leston
Rated 5 out of 5
Date: 2023-06-30

Just remember to update the firmware.

See any errors on this page?

How do I remove this lens?! I installed it ...

How do I remove this lens?! I installed it without the lens.
Asked by: Alby
In order to remove the lens from the Viltrox EF-M1 Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Micro Four Thirds Camera, please press the lever on the right side of the adapter.
Answered by: Dan W
Date published: 2023-07-13

Does it work with BMPCC 4K Camera & Sigma 18-35mm ...

Does it work with BMPCC 4K Camera & Sigma 18-35mm DC f/1.4 Lens?
Asked by: Prabhjeet
Yes it is compatible with the Black Magic Pocket Cinema 4K camera and the Sigma 18-35mm f1.8 Canon mount lens.
Answered by: Dan W
Date published: 2020-01-14

Will this let me attach Canon EF lenses to an ...

Will this let me attach Canon EF lenses to an Olympus System OM-1 camera body? Will the camera and/or lens lose functionality?
Asked by: Kira
Yes, the Viltrox EF-M1 lens mount adapter for Canon EF or EF-S-Mount Lens will allow end-users to mount to any micro four thirds camera system.
Answered by: hectorm
Date published: 2023-07-03

Is this a focal reducer?

Is this a focal reducer?
Asked by: Jennifer
No, this is just a straight adapter. the EF-M2 is a focal reducer.
Answered by: Phil
Date published: 2025-08-18

Will the GH6 retain IBIS & autofocus if I use ...

Will the GH6 retain IBIS & autofocus if I use this lens adapter?
Asked by: Alby
Yes, using the Viltrox EF-M1 Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Micro Four Thirds Camera will retain the Cameras image stabilization. And if he lens has IS it will retain that as well.
Answered by: Rob K
Date published: 2024-05-04

Will this work with an E-M5 Mark III?

Will this work with an E-M5 Mark III?
Asked by: Sean
The Viltrox EF-M1 Lens Mount Adapter for Canon EF or EF-S-Mount Lens to Micro Four Thirds Camera is compatible with the Olympus OM-D E-M5 Mark III Mirrorless Camera.
Answered by: Lawrence C
Date published: 2022-10-26

Will this work on the Bmpcc 4k?

Will this work on the Bmpcc 4k?
Asked by: Pavel
The Ef-M2 is not a newer version of this adapter. The M2 is a focal reducer/speed booster giving you a wider field of view and reducing the 2x crop factor of the sensor in the BMPCC4K to something closer to a Super 35 or APS-C sensor. This M1 adapter is just a straight adapter meaning you will still have that 2x crop factor. The advantage of that is if you have something like the 18-35 f1.8 from SIgma, you could use the M2 to have the lens perform as it would on an APS-C sensor, and then this M1 to utilize that crop factor to get more reach and have it perform like a 36-70mm lens. So rather than carry 2 lenses, you could just carry the 2 adapters which might be more appealing if you're trying to run and gun or travel light.
Answered by: Phil
Date published: 2022-06-21

Could this adapter adapt to my Panasonic Lumix ...

Could this adapter adapt to my Panasonic Lumix G100?
Asked by: Malena
Yes this adapter can work on Panasonic Micro 4/3 series cameras such as the G100.
Answered by: Kirk R
Date published: 2020-10-27
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