EF - R Adapter Question

[Renegade Viewfinder]

I have the Canon EF - R adapter and use it on my EOS R what I am wondering is do you loose anything in using EF lenses on this camera with the adaptor. Focus speed, image quality. Just curious. I just got the 50mm 1.8 RF and 35mm 1.8 RF but cant afford the 24mm to 70mm. I plan to use adapter and my Tamron 24mm to 70mm if I will not lose a lot. Any help would be greatly appreciated.

 

[Ed Cordes]

I use the Canon EF-R adapter on my R5 and find it to be perfect. No change in AF speed, image quality, or anything else. Just be sure you have the Canon adapter, not 3rd party.

 

[Renegade Viewfinder]

Thanks for the info really appreciate it.

 

[brianh]

I also have a Canon R and the adaptor on my EFS 10-18mm and I've not noticed any problems with it in terms of quality. Hope this helps

 

[DaveTX]

The adapter is just a spacer that has features to pass the electrical signals to the EF or EF-S lens. As such, any tolerance errors in the spacing are accounted for in the focusing process. One great feature of focusing on a mirrorless camera is that the sensor itself is used for focusing, rather than separate sensors as on a DSLR. Thus, no focus calibration is required.

 

[Heilo]

I don’t have any native RF glass yet. I heard that shutter speeds with EF glass is lower than with RF. Can anyone confirm, and if there is a slow down, does it really affect anything? I shoot with a 5d mkIV and the R5 so I have an adapter instead of using two sets of glass.

 

[Critshotstudio]

As far as quality goes, no. you wont lose naything quality wise. Its merely an adapter to allow the camera to communicate with the ef mount lens.

 

[KEN_A]

I have these adapters and find the EF lenses work fine. With no worries regarding micro adjustments required for back or front focus problems, the EF L lenses seem to perform better. As yet no RF lenses.

 

[Joetheslug]

I have the Canon EF - R adapter and use it on my EOS R what I am wondering is do you loose anything in using EF lenses on this camera with the adaptor. Focus speed, image quality. Just curious. I just got the 50mm 1.8 RF and 35mm 1.8 RF but cant afford the 24mm to 70mm. I plan to use adapter and my Tamron 24mm to 70mm if I will not lose a lot. Any help would be greatly appreciated.

I've tried my 200mm 1.8 on the R5. Amazing focus speed.

 

[Rhody]

I've tried my 200mm 1.8 on the R5. Amazing focus speed.

That is music to my ears as I want to use the same lens on the R5.
I did try using this lens with a Metabones adapter on a friends Sony A7R3 and in bright light the focus was fine but when the light levels dropped it just hunted without achieving focus at all.

 

[Copterdoc]

I shoot with both the EF and RF lenses. I find the Canon adapter works perfectly with no perceptible loss of speed. I'm very satisfied with the results. That being said, I have invested in some new RF glass. I find the RF glass to be a bit sharper and with less chromatic aberration. The newer lenses are more expensive so you need to consider whether the expense is advisable for your situation.

 

[Rhody]

I shoot with both the EF and RF lenses. I find the Canon adapter works perfectly with no perceptible loss of speed. I'm very satisfied with the results. That being said, I have invested in some new RF glass. I find the RF glass to be a bit sharper and with less chromatic aberration. The newer lenses are more expensive so you need to consider whether the expense is advisable for your situation.

Very many thanks for that comment. I'll try the EF lenses first and then make the move over to RF lenses in stages. Thank you.

 

[Greg]

I have a copy adaptor. I cannot see any effect of the adaptor.

I can see a different between using the same lens on my Canon 1000D and Canon R5 with the adaptor. But that's not a fair comparison the 1000D isn't anywhere close to the R5.

Any adaptor like the EF-R is passive, its has no glass. If the electriconic signal is comprised then any lens will fail. That is not the case with my adaptor. My basic adaptor cost about £200 less than Canon, that's a good lump towards good glass

 

[Rhody]

I have a copy adaptor. I cannot see any effect of the adaptor.

I can see a different between using the same lens on my Canon 1000D and Canon R5 with the adaptor. But that's not a fair comparison the 1000D isn't anywhere close to the R5.

Any adaptor like the EF-R is passive, its has no glass. If the electriconic signal is comprised then any lens will fail. That is not the case with my adaptor. My basic adaptor cost about £200 less than Canon, that's a good lump towards good glass

Very many thanks Greg - I'm pleased to hear that.

 

[Arleymon]

I have the Canon EF - R adapter and use it on my EOS R what I am wondering is do you loose anything in using EF lenses on this camera with the adaptor. Focus speed, image quality. Just curious. I just got the 50mm 1.8 RF and 35mm 1.8 RF but cant afford the 24mm to 70mm. I plan to use adapter and my Tamron 24mm to 70mm if I will not lose a lot. Any help would be greatly appreciated.

According to a good friend of mine who is a Canon Explorer of Light photographer, you do not lose a thing at all. He has tested the equipment by comparing an R5 with the adapter and his EF 100-400 and his R5 with the RF 100-500 and has found the two images to be exactly the same. He is not buying all new RF lenses to replace his EF lenses.

 

[Greg]

According to a good friend of mine who is a Canon Explorer of Light photographer, you do not lose a thing at all. He has tested the equipment by comparing an R5 with the adapter and his EF 100-400 and his R5 with the RF 100-500 and has found the two images to be exactly the same. He is not buying all new RF lenses to replace his EF lenses.

Don't quot me, I think the combination of R series camera and RF lens work in harmony. Together they make adjustments to JPG pictures, it is possible to see the adjustments in RAW.

This harmony, as far as I'm aware, is not present or has less effect when the combination is R body and EF lens.

I'm sure, by the time you print or view on a screen of moderate size and resolution only the very critical will notice any differences

 

[Dave Williams]

Just my opinion but unless the RF lens offers something not available in EF glass I don't see much point in buying purely because it's an RF lens unless it's a lens that you haven't already got.

 

[Greg]

I believe the RF lenses are new builds and not just a re-skined EF with a RF mount

 

[Wibble1]

I am finding it impossible to find a native adapter, anywhere!! Unless anyone knows more than me???
I have resorted to a TPM adapter and so far have found no issues at all, but am still nervous about their weather sealing etc and want a real one ..

 

[JWILL]

I have the R6 and use the adapter with the EF 75-300 L and the EF 100 Macro lens and they seem to work great together. I haven’t noticed any problems so far. Just had the R6 for a couple of weeks.

 

[slclick]

My experience has been either neutral or slight improvements. The one that isn't an improvement I am selling, my beloved 40 pancake. There have been a few reports of certain lenses being slower in focusing (those have all been FBW I believe) and noisier but for the most part it's a win win with EF glass, Canon 1st party that is.

 

[Roger Hopkins]

Very many thanks Greg - I'm pleased to hear that.

The basic RF-EF adapter is £119.99 from the Canon store, Greg. So if you saved £200, you were being ripped of handsomely! My EOS-R came bundled with it. It works absolutely perfectly.

 

[Greg]

The basic RF-EF adapter is £119.99 from the Canon store, Greg. So if you saved £200, you were being ripped of handsomely! My EOS-R came bundled with it. It works absolutely perfectly.

Do t think I or anyone was being ripped off when the Canon adapter was over £200. That was the cost last February when I ordered my R5. The cost drove me to get an after market for under £50 , the same adapter is now about £35. And now I use my RF 24 240 almost exclusively the adapter is almost redundant

 

[jwn]

I don’t have any native RF glass yet. I heard that shutter speeds with EF glass is lower than with RF. Can anyone confirm, and if there is a slow down, does it really affect anything? I shoot with a 5d mkIV and the R5 so I have an adapter instead of using two sets of glass.

some ef lens can't handle the high speed.....check the Canon Manual it has list of which do and which don't...you will ge blinky on the camera

 

[EricM]

I bought an R6. I use it with the EF 500/4. Since I bought it the eos 5D mk 4 has stayed in the cupboard. I prefer the results from the R6. There are probably a variety of reason but there's, for example, no need for microadjustment for mirrorless lenses.
The adaptor is essentially just a spacer to enable the image to focus the image at the 44mm required by the EF system rather than the 20mm of the R system. Plus, of course, maintain the electrical connections between the lens and body. Go for it.
Eric