EF-EF-M adapters

Does anyone have first hand experience of using any of the many non-Canon adapters?

The Canon one does seems a lot more expensive than many of the non-Canon ones I see advertised.

But do they work as well eg AF, AE etc?

nnowak wrote:

davesurrey wrote:

Does anyone have first hand experience of using any of the many non-Canon adapters?

The Canon one does seems a lot more expensive than many of the non-Canon ones I see advertised.

But do they work as well eg AF, AE etc?

Electronically, there is no difference. All are wired as a straight pass through with no signal processing of any kind.

With some of the cheaper adapters, some people noticed additional flare and ghosting in strongly backlit situations due to internal reflections in the adapter. Most people never notice the issue as it only happens in certain circumstances and is fairly subtle.

Thanks that's very helpful.

Do you know which makes exhibited flare?

davesurrey wrote:

Does anyone have first hand experience of using any of the many non-Canon adapters?

The Canon one does seems a lot more expensive than many of the non-Canon ones I see advertised.

But do they work as well eg AF, AE etc?

I'd only recommend the genuine Canon adapters.  Flare (and veiling glare) effects range from mild to bad.  They'll rob your images of contrast and color.  Here's a previous thread detailing the effect...

https://www.dpreview.com/forums/thread/4324738#forum-post-64795450

R2

R2D2 wrote:

davesurrey wrote:

Does anyone have first hand experience of using any of the many non-Canon adapters?

The Canon one does seems a lot more expensive than many of the non-Canon ones I see advertised.

But do they work as well eg AF, AE etc?

I'd only recommend the genuine Canon adapters. Flare (and veiling glare) effects range from mild to bad. They'll rob your images of contrast and color. Here's a previous thread detailing the effect...

https://www.dpreview.com/forums/thread/4324738#forum-post-64795450

R2

Thanks R2D2, I was looking for a thread as suggested by nnowak.

Seems saving a few £ may not be worthwhile in this instance

davesurrey wrote:

Does anyone have first hand experience of using any of the many non-Canon adapters?

The Canon one does seems a lot more expensive than many of the non-Canon ones I see advertised.

But do they work as well eg AF, AE etc?

There were problems reported on this board by members trying out non-Canon adapters. This occurred at a time when Canon didn't seem to have any stock available quite a few years ago.  I believe that one EF-EF-M adapter made by Viltrox was lightweight and did not fit tightly (it would rattle) and this caused an issue with contracts not connecting properly.  The Canon version fits very snug.  This is important because a loose fitting will allow heavier lenses to pull at the fitting, causing any gap to potentially widen.
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EF-to-EF-M lens mount with the "foot" removed to streamline it.

Making use of the Adapter foot - which was fitted to a Manfrotto mini-tripod.  You really don't want a heavy lens hanging off the front of any camera without some support.

Using the EF-to EF-M adapter to mount a folding Manfrotto Mini Tripod which was then used as a carry handle with some larger lenses.

Accessing the battery door on the M6 with the adapter foot - with the EF 24mm f/1.4L lens.

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Some non-Canon versions don't have the tripod-foot included.  Some older versions from Canon didn't include the tripod foot in the box either after Canon stopped supplying it for a while.   The foot is removable but it is also useful with fitting mini-tripods or simply attaching larger lenses so the camera isn't just "hanging off the back" of the lens and that both lens and camera are uniquely supported by the adapter.  That member with a Viltrox adapter said he replaced it eventually with a Canon version which apparently worked fine.  I've also noticed issues where people used non-Canon RF-EF adapters on their EOS R cameras and found that the batteries would mysteriously drain overnight when using them.  There may have been an EOS M user who experienced the same.  Replacing the adapter with a Canon version resolved the issue.
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The Canon EF-to-EF-M Mount Adapter - has a removable tripod mount "foot" on the bottom.  This can be surprisingly useful.  There's even another tripod mount underneath it when removed.  Removing it can streamline the fitting but it can also be used to fit other accessories.

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There were some reports of a non-Canon adapter causing problems with contacts not meeting one another.  This resulted in AF problems for the user.  This problem is common with a lot of the cheaply made versions where the contacts are poorly made.  Internal reflections have been reported from some of the non-Canon versions where the interior wasn't baffled or matted enough to stop stray light reflections.
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The Canon version (from memory) has a weather seal on one end which (when coupled with a sealed EF-L-series lens) should complete the weather seal.  It also uses thicker coatings on the gold contacts which are sprung more tightly and are not as prone to "sticking" when lenses are fitted.  If a contact isn't sprung tight enough, it sometimes wont push up against the contact on the lens and that results in failure to communicate with the body.
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If you only have one or two lenses to adapt and they're quite lightweight, it may not really matter all that much if you use the Canon brand or not, although I'd personally pass on the Viltrox brand myself due to the lose fittings.  But if you use heavier lenses with a lot of glass in them, or if you have a few different lenses that you might wish to use on your EOS M camera, then it's worth getting the Canon branded version simply because of the rigidity, solid construction and reliability.

That's extremely helpful Marco. Many thanks.

I only intend to use a couple of relatively lightweight EF mounts on an M5 or M6ii. Mostly I'll be using native M mount lenses.  I'll leave my heavy EF 100-400 L lens for my R7. But it does seem best to get the Canon adapter.

In the early days with M system, I returned an adapter because of the not so tight fit, causing some connectivity issues. Unfortunately I do not remember the brand, but the plastic insight was glossy and as not matte as Canon's.

You can buy used to cut the price.

Maxmolly7 wrote:

In the early days with M system, I returned an adapter because of the not so tight fit, causing some connectivity issues. Unfortunately I do not remember the brand, but the plastic insight was glossy and as not matte as Canon's.

You can buy used to cut the price.

When I got my first M body I bought a used Canon adapter for $50.  It looked brand new & was quite a bargain compared to the new price.  Even now the adapter is over $100 at the refurb store.  With patience, I suspect that a good used copy might be found.

JRET wrote:

Maxmolly7 wrote:

In the early days with M system, I returned an adapter because of the not so tight fit, causing some connectivity issues. Unfortunately I do not remember the brand, but the plastic insight was glossy and as not matte as Canon's.

You can buy used to cut the price.

When I got my first M body I bought a used Canon adapter for $50. It looked brand new & was quite a bargain compared to the new price. Even now the adapter is over $100 at the refurb store. With patience, I suspect that a good used copy might be found.

And to think they actually GAVE them away at one time.

I have 2 genuine OEM and one 3rd party, and I won’t even give the 3rd party adapter away to someone (see my test results in the other linked thread!).

R2

I decided to go with a preowned Canon adapter for a few bucks more than some of the third-party products but quite a bit less than a new Canon adapter. It was described as "excellent" condition. Looked like new condition to me and works perfectly.

Actually, the Canon adapter is well made and by nature not likely to wear out or suffer a lot of abuse as long as it's kept clean. I can recommend mpb as a good, honest source of used gear. If mpb rates an item excellent, in my experience it will be at least that and maybe like new.

Best of luck, whatever you decide on.

I too made the same decision. After spending a fair bit of change on the M system and having good, expensive EF/EF-S lenses I want to use with it, why skimp on a 3rd party adapter. I bought a refurb from Canon.

Yes I am hearing a lot of good things about MPB and currently they have several "like new" for £73. Seems a no-brainer considering the tales of issues with other manufacturers.

You can get a Canon adaptor from e-Bay for around half price. Lots of people buy them and then later don't have a need for them.

The tripod foot is a pain in the neck, but the adaptor itself should be perfect.

ThrillaMozilla wrote:

You can get a Canon adaptor from e-Bay for around half price. Lots of people buy them and then later don't have a need for them.

The tripod foot is a pain in the neck, but the adaptor itself should be perfect.

You can can take it off, you know?

Maxmolly7 wrote:

ThrillaMozilla wrote:

You can get a Canon adaptor from e-Bay for around half price. Lots of people buy them and then later don't have a need for them.

The tripod foot is a pain in the neck, but the adaptor itself should be perfect.

You can can take it off, you know?

Yeah, I took them off right after buying, and threw them in a drawer somewhere. 

R2

R2D2 wrote:

Maxmolly7 wrote:

ThrillaMozilla wrote:

You can get a Canon adaptor from e-Bay for around half price. Lots of people buy them and then later don't have a need for them.

The tripod foot is a pain in the neck, but the adaptor itself should be perfect.

You can can take it off, you know?

Yeah, I took them off right after buying, and threw them in a drawer somewhere.

R2

I have 2 of these and use 1 with the foot for EF-S 55-250mm or EF 100-400mm and, the other one (originally) without foot for EF prime lenses.

Maxmolly7 wrote:

ThrillaMozilla wrote:

You can get a Canon adapter from e-Bay for around half price. Lots of people buy them and then later don't have a need for them.

The tripod foot is a pain in the neck, but the adapter itself should be perfect.

You can can take it off, you know?

Yes, but you'll have to leave it on when you're using it.

The problems with it are that it's too hard, or maybe impossible, to keep it fastened firmly, and the foot itself has too small a tripod surface. I doubt if the third party adapters would be any better.

My solution, by the way, is not to use it. It's fine with an EF-S 55-250.  The only big lens I have has its own tripod foot, and the others are fine with the camera's tripod mount.

Maxmolly7 wrote:

R2D2 wrote:

Maxmolly7 wrote:

ThrillaMozilla wrote:

You can get a Canon adaptor from e-Bay for around half price. Lots of people buy them and then later don't have a need for them.

The tripod foot is a pain in the neck, but the adaptor itself should be perfect.

You can can take it off, you know?

Yeah, I took them off right after buying, and threw them in a drawer somewhere.

R2

I have 2 of these and use 1 with the foot for EF-S 55-250mm or EF 100-400mm and,...

Huh?  The EF 100-400 has its own foot unless you lost it, and it really is very heavy to use with camera tripod mount.