Has anyone used third party lenses on an EOS R yet?

Kit Lens Jockey

CR Pro
Nov 12, 2016
I forget if I've seen a video where someone tried this or not, but does anyone know if third party lenses have been tested on the EOS R yet? I would hope that anything that works on a current camera would work on the EOS R with an adapter, but it'd be nice to know this for sure.

Mt Spokane Photography

I post too Much on Here!!
CR Pro
Mar 25, 2011
Most should work, but Sigma lenses have a habit of not working on new models due to faulty reverse engineering. I think that pattern will continue. The only people with EOS R cameras will have loans from Canon, and they will likely be prohibited from reporting on 3rd party lenses.


EOS R5 Mark II
CR Pro
Aug 25, 2015
London, UK
Strangely some of the older film-generation Sigma EF lenses that haven't worked with any EF DSLRs since around the 20D started working again with the EOS M3 and the Canon EF->EF-M adaptor. Don't ask my why...


I'm New Here
Aug 14, 2018
Hy all
Regarding this aspect i see only one video made by Tony & Chelsea about Canon R
Here is the video.
He use Sigma 18-35 f1.8 art for 4k video.
Watch the video...he explain that the camera enter in auto mod crop attaching the ef-s lens.
The quality of the video is very very good with the sigma art.
I think 4k on canon R is more or less a super35...not bad at all.
Beeing able to use fast lenses such as sigma art 14mm f1. 8 or canon 20mm f2.8 or 28mm f1.8 it is very good.
Hope it helps
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