
VILTROX EF-EOS M Lens Mount Auto Focus Adapter, Compatible with Canon EF/EF-S Lens to Canon EOS M (EF-M Mount) Mirrorless Camera Body EOS M100 M50 M3 M10 M6 M5
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AI Verdict
This is a 11.3-ounce lens adapter that connects Canon EF/EF-S lenses to Canon EOS M mirrorless cameras, enabling autofocus and aperture control for budget-conscious M-series shooters.
This adapter is a situational fit for Canon EOS M users who want to leverage their existing EF/EF-S lens collection. It enables core functions like autofocus and aperture control, but its 11.3-ounce weight and reported autofocus delays mean it's not a seamless experience for all shooting scenarios. The budget price point makes it appealing for those who can tolerate these compromises.
If you need faster, more reliable autofocus and a tighter fit, look for the official Canon Mount Adapter EF-EOS M, or consider a native EF-M lens if available for your desired focal length.
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Pros
- Allows full use of Canon EF and EF-S lenses, covering an 8mm to 800mm focal length range, on EOS M bodies.
- Supports all lens functions, including image stabilization and autofocus.
- Features an all-metal body construction, contributing to a sturdy feel.
- Includes a removable 1/4 standard interface tripod mount, useful for balancing heavier lenses.
- Maintains original image quality, sharpness, and color when adapting lenses.
- Significantly less expensive than Canon's official EF-EOS M adapter.
Cons
- Autofocus performance can be slightly delayed and not super fast, making it less suitable for quick action.
- Some users report the adapter can fit loosely on the camera body, potentially causing intermittent connection issues or focus hunting.
- The removable tripod mount, when detached, leaves two exposed holes in the adapter body.
- Not all EF/EF-S lenses are guaranteed to work perfectly, though it covers a wide range.
- Weighs 11.3 ounces, which can add noticeable bulk to a compact mirrorless system, especially with larger lenses.
Dimension Scores
Users report no noticeable difference in sharpness, contrast, or color compared to using lenses on a DSLR, indicating the adapter does not degrade optical performance.
While autofocus functions, users consistently note a slight delay and that it's not 'super fast,' making it less ideal for rapidly changing scenes.
The adapter is described as 'okay for just normal general B-roll footage,' but not reliable for heavy video work due to slower autofocus.
At 11.3 ounces, it's not featherlight for a mirrorless accessory, but it's designed to be 'small and lightweight' to match EOS M bodies, and users find it easy to carry.
Best For
- Canon EOS M users with existing EF/EF-S lens collections who want to avoid buying native EF-M lenses.
- Photographers on a budget looking to expand their lens options for an EOS M camera without spending on the official Canon adapter.
- Studio or landscape photography where autofocus speed is not a critical factor.
- Using heavier EF lenses on an EOS M camera, leveraging the integrated tripod mount for stability.
Not Recommended For
- Action or sports photographers who require consistently fast and precise autofocus performance.
- Users who prioritize a perfectly snug, OEM-level fit to avoid any potential connection issues.
- Videographers relying on seamless, silent, and rapid continuous autofocus for dynamic subjects.
Watch Out For
- The adapter can feel loose when mounted to the camera, leading to instances where the lens loses contact and causes focus hunting or errors.
- Autofocus, while functional, exhibits a slight delay compared to native EF-M lenses or EF lenses on a DSLR, making it less responsive for fast-moving subjects.
- Removing the 1/4 standard interface tripod mount leaves two open holes in the adapter, which could expose the interior.
- One user reported that the Viltrox adapter did not work with a specific lens on their M6 Mark II.
Full Specifications
| ASIN | B00CBGFUT2 |
| Brand | VILTROX |
| Language | English |
| Lens Type | Standard |
| Item Weight | 11.3 ounces |
| Manufacturer | Shenzhen Jueying Technology Co., Ltd. |
| Item model number | EF EOS M |
| Product Dimensions | 7.87 x 7.87 x 7.87 inches |
| Compatible Mountings | Canon EF |
| Camera Lens Description | 8 |
| Focal Length Description | 800 millimeters |
| Is Discontinued By Manufacturer | No |
What Buyers Say
The VILTROX EF-EOS M adapter is a popular choice because it's significantly cheaper than Canon's official version, and many users report it works just as well for basic functionality. However, a recurring complaint is that the adapter can fit loosely on the camera body, which sometimes causes the lens to lose connection and leads to focus hunting or errors. While autofocus is supported, it's often described as slightly delayed, making it less suitable for fast-paced photography or video. The all-metal build is frequently praised for feeling sturdy.
“Look, for the price, this thing is a no-brainer if you've got a bunch of old EF lenses and an M-series camera. Yeah, the autofocus isn't lightning fast and it wiggles a tiny bit, but my 50mm 1.8 works perfectly and I didn't have to shell out for the Canon one!”
Common Praise
- Allows full functionality of EF/EF-S lenses, including image stabilization and aperture control.
- All-metal construction feels sturdy and well-built.
- Includes a useful, removable tripod mount for heavier lenses.
- Does not degrade image quality, maintaining original sharpness and color.
- Provides a cost-effective way to use a wide range of Canon DSLR lenses on EOS M cameras.
Common Complaints
- Autofocus is not as fast as native lenses or EF lenses on a DSLR, exhibiting noticeable delays.
- The adapter can have a loose fit on the camera body, leading to connection issues and focus hunting.
- Some specific EF/EF-S lenses may not function correctly with the adapter.
- Removing the tripod mount leaves open holes in the adapter body.
Ownership Tips
- After a few weeks, you might notice the slight autofocus delay more, especially if you switch between adapted and native EF-M lenses.
- The loose fit, if present on your unit, can become more annoying over time, sometimes requiring a camera restart to re-establish connection.
- The tripod mount is genuinely useful for balancing larger lenses, preventing strain on the camera's mount.
- The adapter's weight of 11.3 ounces, combined with a heavy lens, can make the compact EOS M system feel front-heavy.
Frequently Asked Questions
Does this adapter support autofocus with all Canon EF and EF-S lenses?
Yes, the VILTROX EF-EOS M adapter is designed to support autofocus with Canon EF and EF-S lenses on EOS M mirrorless cameras. However, some users report slight delays in autofocus speed.
Can I use image stabilization with my adapted lenses?
Yes, this adapter permits all lens functions, including image stabilization, when using compatible Canon EF and EF-S lenses.
Is the tripod mount removable?
Yes, the adapter features a removable 1/4 standard interface tripod mount. This is particularly useful for providing balance and support when using heavier lenses.
Will this adapter affect the image quality of my EF/EF-S lenses?
Based on user feedback, there is no noticeable difference in image quality, color, or sharpness when using lenses with this adapter compared to using them on a DSLR.
Is the Viltrox adapter comparable to the official Canon adapter?
Many users find the Viltrox adapter performs similarly to the official Canon adapter in terms of functionality and build quality, especially considering its lower price point. However, some users have reported a looser fit compared to the Canon version.
Buying Guide
When you're looking at lens adapters like this, you're essentially trying to bridge two different camera systems. This VILTROX adapter lets you use Canon's older, larger EF and EF-S lenses on your smaller EOS M mirrorless camera. The big deal is whether it lets your lenses autofocus and adjust aperture, which this one does. But remember, adapters can sometimes introduce quirks, especially with autofocus speed or how snugly they fit.
Lens Compatibility (EF/EF-S to EF-M)
This tells you which lenses you can use. EF lenses are for full-frame Canon DSLRs, and EF-S are for crop-sensor DSLRs. EF-M is for Canon's mirrorless M-series. This adapter acts as a translator, letting your older DSLR lenses talk to your newer mirrorless camera, expanding your lens options without buying new ones.
Autofocus Support
This is crucial. Without it, your lenses would only focus manually, which is slow and frustrating for many types of photography. This adapter claims to support autofocus, meaning your camera and lens can still communicate to find focus automatically. However, it might not be as fast as native lenses.
Removable Tripod Mount
If you're attaching a big, heavy EF lens to your small EOS M camera, the weight can put stress on your camera's lens mount. A tripod mount on the adapter itself lets you attach the whole setup to a tripod, supporting the lens's weight directly and protecting your camera.
Alternatives
If this adapter doesn't quite cut it, look for adapters with reported faster autofocus performance or a more secure lens-to-camera fit. You might also consider speed boosters, which not only adapt lenses but also increase the effective aperture and widen the field of view.



