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Best converter for EF to RF?

  
 
John Power
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p.1 #1 · Best converter for EF to RF?


Looks like I will be ordering an R8 but I have several EF lenses I want to use. Which one should I buy?


May 14, 2026 at 08:57 AM
EB-1
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p.1 #2 · Best converter for EF to RF?


Just buy the basic Canon adapter or the Canon adapter with the control dial.
They fit just perfectly tight, but not too tight.

EBH



May 14, 2026 at 09:16 AM
Cliff L.
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p.1 #3 · Best converter for EF to RF?


John Power wrote:
Looks like I will be ordering an R8 but I have several EF lenses I want to use. Which one should I buy?


The basic Canon EF-R adapter works flawlessly and can be found second-hand for about $75, or about twice that amount new.

https://www.bhphotovideo.com/c/product/1433717-REG/canon_mount_adapter_ef_rf.html



May 14, 2026 at 09:16 AM
John Power
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p.1 #4 · Best converter for EF to RF?


Thanks. I will do that.


May 14, 2026 at 09:22 AM
Mike_5D
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p.1 #5 · Best converter for EF to RF?


I wound up getting an adapter for each lens since I got tired of looking for it in the cabinet of lenses when I wanted one quickly. I have a Comlite (not recommended, but it's all I could get in the early days), a Canon with control ring (I don't use the control ring) and several of the one listed below which works great despite the questionable name. At 1/3 the price of the Canon, I can afford to have one for every lens.

https://www.amazon.com/Mount-Adapter-EF-EOS-Canon-Cameras/dp/B0B79QM1CD



May 14, 2026 at 09:40 AM
bogeypro
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p.1 #6 · Best converter for EF to RF?


I bought the genuine Canon EF-to-RF adapter and compared it to a friends Meinke EF-to-RF adapter and I could not see or feel any tangible difference between the two.

I know that mine is better because it's full of genuine Canon air



May 14, 2026 at 01:37 PM
Mike_5D
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p.1 #7 · Best converter for EF to RF?


bogeypro wrote:
I bought the genuine Canon EF-to-RF adapter and compared it to a friends Meinke EF-to-RF adapter and I could not see or feel any tangible difference between the two.

I know that mine is better because it's full of genuine Canon air


Does the Meinke have the ridges inside and the weather sealing gasket?



May 14, 2026 at 01:50 PM
Ferrophot
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p.1 #8 · Best converter for EF to RF?


I have one third party and one Canon adaptor. The third party one has become looser over time but the Canon one is still like new with no looseness. Both work equally well as far as operation goes.


May 14, 2026 at 09:17 PM
garyvot
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p.1 #9 · Best converter for EF to RF?


If price is not a consideration, always buy the Canon (just my $.02). Refurbished adapters are often available from Canon online, sometimes at sale prices.

Most full frame Canon R-system cameras have three dials. However, the R8 only has two. So, for this body in particular, I like to use the Canon adapter with the control ring.

The control ring adapter is a bit heavier and slightly less sleek (if you are into aesthetics), but I find having the functionality to be useful with the R8.

If you are a videographer or a landscape or architecture photographer, you may also want to look at the Canon drop-in filter adapter. It's an elegant way to use ND filters with EF lenses.



May 14, 2026 at 10:22 PM
tsangc
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p.1 #10 · Best converter for EF to RF?


An upvote for the Control Ring adapter. I got it with my RP and found it was nice to have another control to assign (for me it's ISO but I think most use it for exposure compensation).

I haven't managed to find another locally for cheap on the used market, so I got a K&F one, It's functionally no different, but I do miss the Control Ring since I own no RF lenses.



May 15, 2026 at 01:26 AM
 


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John Power
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p.1 #11 · Best converter for EF to RF?


If I can pay $2500 for a guitar I can handle $250 for the Canon It arrives today.


May 15, 2026 at 02:27 AM
hatsubai
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p.1 #12 · Best converter for EF to RF?


Most people will say the Canon one, but my buddy has the Meike with the drop-in filter that seemed to be reliable when we went shooting together. YMMV, of course.


May 15, 2026 at 06:25 AM
bogeypro
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p.1 #13 · Best converter for EF to RF?




Mike_5D wrote:
Does the Meinke have the ridges inside and the weather sealing gasket?

Sorry, it's been to many years & my friend has migrated to a different platform



May 15, 2026 at 08:05 AM
Mike_5D
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p.1 #14 · Best converter for EF to RF?


John Power wrote:
If I can pay $2500 for a guitar I can handle $250 for the Canon It arrives today.


Having one adapter works fine until you have a mix of RF and EF lenses.



May 15, 2026 at 09:41 AM
John Power
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p.1 #15 · Best converter for EF to RF?


I do not know what you mean by that. If I get an RF lens don't I just detach the adapter and connect the lens directly to the camera?


May 15, 2026 at 11:36 AM
EB-1
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p.1 #16 · Best converter for EF to RF?


You keep an RF-EF adapter on each EF lens or at least a few of them.
The hassle is when you have to swap EF TCs on/off. Just make sure to have the camera set to close the shutter when the power is off.

EBH



May 15, 2026 at 11:43 AM
John Power
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p.1 #17 · Best converter for EF to RF?


I thought you connect the adapter to the camera and then you connect whatever EF lens you wanted to use to the adapter



May 15, 2026 at 11:52 AM
John Power
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p.1 #18 · Best converter for EF to RF?


And by TC do you mean teleconverter?


May 15, 2026 at 11:54 AM
Mike_5D
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p.1 #19 · Best converter for EF to RF?


John Power wrote:
I do not know what you mean by that. If I get an RF lens don't I just detach the adapter and connect the lens directly to the camera?


When I got my R6, all of my lenses were EF. Easy. Stick the adapter on the body and forget about it. Then I got an RF lens. So if I'm carrying one EF and one RF lens, the adapter stays with the EF lens. The problem arises when you have a mix of lenses. You start with an adapted EF lens. Then you swap to an RF lens and the adapter stays with the EF lens. Then you swap to a different EF lens have to move the adapter. It's just more fumbling in the bad.

I keep my lenses in a file cabinet at home. So many times, I'd run to the cabinet to quickly grab my camera for something and have to look for the adapter. I'd want to take the RF50 off and throw on the EF 100-400 but the adapter was on the EF100 macro in the other drawer. I've found that having multiple adapters just makes things easier. It gets real expensive at Canon prices though.



May 15, 2026 at 11:55 AM
robstein
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p.1 #20 · Best converter for EF to RF?


I've mostly converted to RF now but still use some EF's; I really like the drop in filter version as it adds a lot of flexibility if you use filters. Otherwise, just grab the basic one - I do have one with a custom dial but it's not as useful as I would have expected.

I understand the one converter for each lens concept but I don't find it that hard to just release the lens end and keep the camera end connected all the time you adjust to the new button location.



May 15, 2026 at 12:04 PM
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