A Comprehensive Review of the Viltrox EF-EOS M Lens Mount Adapter

A Comprehensive Review of the Viltrox EF-EOS M Lens Mount Adapter

If you use a Mirrorless camera in Canon’s EOS M lineup (for example the Canon EOS M50), you already know that you are limited in your lens options.

The only lenses that will fit natively on your camera are lenses made exclusively for the Canon EOS M body. Those are not always easy to find or preferable in terms of price and utility. 

Enter the Viltrox EF-EOS M Lens Mount Adapter. 

A Comprehensive Review of the Viltrox EF-EOS M Lens Mount  Adapter (This picture shows the Viltrox ef-eos m lens mount adapter ready to be used)
I have had my Viltrox EF-EOS M Lens mount adapter since October of 2023

A lens mount adapter that can open up your EOS-M camera body to the vast library of lenses that is Canon’s EF lens lineup. 

I have had my Viltrox EF-EOS M lens mount adapter for the better part of a year and in this post, I’m going to provide an in-depth review of it. 

To help you figure out whether it unlocks the full potential of Canon’s EF lenses on an EOS M mirrorless camera like the Canon M50

What is the VILTROX EF-EOS M Autofocus Adapter

The Viltrox EF-EOS M lens mount adapter is a lens mount adapter by Viltrox, a leading photography accessories and studio equipment company based in China.

The Viltrox EF-EOS M lens mount adapter is used to adapt EF lenses to EOS M Camera bodies; Take for instance the Canon EF 50mm F/1.8 STM lens on the Canon EOS M50 Camera. 

Specifications

Lens Mount Adapter ModelEF-EOS M
Compatible CamerasCanon EOS M cameras
Compatible lensesCanon EF lenses 
Focus ModeAutofocus
Weight177 grams without cap

What you get in the box

Unboxing the Viltrox EF-EOS M Lens Mount Adapter, what's in the box
Unboxing the Viltrox EF-EOS M Mount adapter
  1. Viltrox EF-EOS M Lens Mount adpater
  2. Front and back caps for the adapter
  3. User manual

Design and Build

The VILTROX EF-EOS M adapter is robust and its solid construction feels good in the hand. 

The design of the Viltrox EF-EOS M mount adapter is solid and durable
The Viltrox EF-EOS M Mount adapter feels solid, durable and well-built.

It fits snugly between the Canon EF lens and EOS M camera body, and in the time I have been using it, close to a year now, it doesn’t wobble at all, which is a very good thing. 

You don’t want to have to worry about your expensive lens falling to the ground. 

In addition, the sleek black exterior paint of the Viltrox EF-EOS M mount adapter maintains a cohesive aesthetic especially if your Camera body is black like mine. Most lenses are also black so there is nothing to worry about in that regard. 

Functionality and Compatibility

When you are getting a third-party lens mount adapter, your main concern is compatibility and functionality. 

And I’m happy to say that the Viltrox EF-EOS M adapter impresses on both fronts, especially paired with the Canon M50, which is the Camera I use it with. 

I use the Viltrox lens adapter to adapt the Canon EF 50mm F/1.8 lens to my Canon EOS M50 and so far I have no complaints.

This picture shows The Viltrox EF-EOS M Lens mount adapter attached to the Canon 50mm F/1.8 STM Lens
The Viltrox EF-EOS M Lens mount adapter attached to the Canon 50mm F/1.8 STM Lens

The Viltrox lens mount adapter works perfectly with the Canon EF 50mm F/1.8 and I have used the pair to great effect as you will see with the picture attachments later on in this post.

I haven’t tried the Viltrox EF-EOS M lens mount adapter with other Canon EF lenses because I don’t currently own any other EF lenses apart from the Canon 50 mm F/1.8.

But using that as a foundation of utility and usefulness, I have no doubt the Viltrox EF-EOS M lens mount adapter would excel with other Canon EF lenses. 

According to the Viltrox official website, the lens mount adapter supports a wide array of Canon EF lenses, from basic primes to complex zooms, offering great versatility to cinematographers. 

In addition, the autofocus functionality on the Viltrox EF-EOS M adapter is great. In my case, it leverages Canon M50’s dual-pixel autofocus system for swift and accurate focusing. 

Performance

The true litmus test for any lens adapter is its performance in real-world scenarios. 

I have been using the Viltrox EF-EOS M adapter for close to 7 months and I have to say, it hasn’t skipped a beat. 

I haven’t had any problems with autofocus speed or accuracy using it with my Canon M50. 

In continuous shooting modes, it maintains pace with the kit lens that came with the Camera, the Canon EF-M 15-45 F/3.5- 6.3 mm lens. 

Below are picture samples as well as a video sample taken using the Viltrox EF-EOS M adapter, with the Canon EOS M50 and the Canon EF 50mm F/1.8 STM lens. 

Picture Samples 

Here are a few samples of pictures I have taken using my Canon M50 camera, paired with the Canon 50 mm F/1.8 lens adapted with the Viltrox EF-EOS M lens mount adapter

A sample of a picture taken using the Canon 50mm F/1.8 lens on the Canon EOS M50 with the Viltrox EF-EOS M lens mount adapter
Picture 1

Picture 1: Lady smiling

  • ISO 100
  • Focal length 50mm
  • 1/250 Shutter speed
  • F 2.2 Aperture

sample picture taken using the Canon 50mm F/1.8 lens on the Canon EOS M50 with the Viltrox EF-EOS M lens mount adapter
Picture 2

Picture 2: Gentleman in a suit.

  • ISO 200
  • Focal length 50mm
  • 1/80 Shutter speed
  • F 1.8 Aperture

sample picture taken using the Canon 50mm F/1.8 lens on the Canon EOS M50 with the Viltrox EF-EOS M lens mount adapter
Picture 3

Picture 3: Young man on graduation day.

  • ISO 100
  • Focal length 50mm
  • 1/80 Shutter speed
  • F 1.8 Aperture

Video Sample

Pros and Cons of the Viltrox EF-EOS M Lens Mount Adapter

Pros Of The Viltrox EF-EOS M lens mount AdapterCons Of The Viltrox EF-EOS M lens mount Adapter
It has a robust construction that will ensure longevity as well as reliability (Mine is still as good as new 7 months after I bought it)The lens mount adapter adds bulk to the entire Camera set up
Excellent compatibility with Canon EF lenses, allowing you to expand your creative toolkit. Adds additional cost to acquiring lenses for your Camera
Great autofocus functionality with accurate and speedy focusingThe autofocus system may not match native Canon Mount adapters. 
The price is good for a tool that opens up your EF-M Camera to EF lenses 

Other EF-EOS M Lens Mount Adapters From Viltrox 

Viltrox offers a variety of lens mount adapters to cater to different camera systems and lens combinations.

Here are some examples:

  1. Viltrox EF-EOS M2 Lens Adapter

This is the second iteration of the Viltrox EF-EOS M lens mount adapter. It is more expensive than the former; 

But for the price bump, it should perform better right? I can only hope it does. I don’t have it myself. 

  1. Viltrox EF-E II Adapter

This adapter allows you to mount Canon EF and EF-S lenses onto Sony E-mount cameras. 

Very useful for Sony camera users who want to tap into the Canon lens ecosystem. 

  1. Viltrox EF-M2 II Adapter

Designed for Micro Four Thirds cameras, this adapter enables the use of Canon EF and EF-S lenses on Micro Four Third camera bodies.

  1. Viltrox NF-E1 Adapter

This lens mount adapter allows Nikon F-mount lenses to be mounted on Sony E-mount cameras.

  1. Viltrox EF-FX2 Adapter

Designed for Fujifilm X-mount cameras, this adapter enables the use of Canon EF and EF-S lenses on Fujifilm X-mount bodies.

These are just a few examples of lens mount adapters offered by Viltrox. 

Each is designed to provide compatibility and functionality between specific lens and camera combinations;

It is imperative, therefore, that before buying a Lens mount adapter from Viltrox, you do your due diligence to confirm that it is the right adapter for your intended use case. 

Alternatives To Viltrox EF-EOS M Lens Mount Adapter

If you’re looking for alternatives to the Viltrox EF-EOS M autofocus adapter, there are a few options available on the market depending on your specific needs and budget:

Canon Mount Adapters

Canon offers its own line of mount adapters, such as the Canon Mount Adapter EF-EOS M. 

These adapters are specifically designed to seamlessly connect Canon EF and EF-S lenses to EOS M mirrorless cameras.

Once I get my hands on it, I will do a side-by-side comparison to see how Canon’s native lens adapter matches the one from Viltrox. 

Other EF-EOS M lens mount adapters from other third-party brands include:

  1. Metabones EF-EOS M Adapter
  2. Commlite EF-EOS M Autofocus Adapter
  3. Fotodiox Pro Lens Mount Adapter
  4. KIPON EF to EOS M Lens Adapter.

Summary

The Viltrox EF-EOS M lens mount adapter is a compelling accessory for Canon EOS M users seeking to tap into the vast and popular EF line of Canon lenses. 

With its robust construction, excellent compatibility with Canon EOS M cameras, reliable performance and cost-effectiveness, it is a must-have accessory for Canon EOS-M owners.

While it may not fully replicate the performance of the native Canon EF-EOS M adapter, it undoubtedly unlocks the full potential of Canon EF lenses on mirrorless platforms. 

It is a worthy addition to your camera tool kit if you own a Canon EOS M camera.

1 thought on “A Comprehensive Review of the Viltrox EF-EOS M Lens Mount Adapter”

  1. I’ve been doing research on the adapter to buy for my canon m50 . Glad to fond your blogpost, it has simplified this for me.

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