CHG_CANON usually have very good information, however this time, altho correct the information is not complete. I am a wildlife photographer, and I was fortunate to get to try out both the R5 and the R6, thank you Canon. I really never was a fan of mirrorless until I tried them. old Electronic View Finders lagged after you pushed the shutter button and many times you would miss the shot. Not with these two cameras. The EVF doesn't black out when shooting it stays lit The auto focus is amazing on both these cameras, better than anything else I have ever used Canon jumped ahead of everybody with these two beasts. Sorry Sony. As for lenses with the adapter you can use all of your old Canon lenses and they will be as sharp as they will allow. Internal stabilization coupled with lens stabilization I can hand hold an eight hundred mm lens and get sharp focus. I ended up buying the R6. Only 20 mp but the sensor is reported to be the same amazing sensor as the 1DX and it has the same processor to boot. I usually advocate to invest in glass not cameras. Being a wildlife photographer I normally use the Canon 7D and the 7D MKll. Here is a full frame camera with a magnesium frame that focuses on the eye of wildlife and keeps focus, shoots up to 20 Frames Per Second, has great video, Both the R5 and R6 are amazing machines.

CHG_CANON usually have very good information, however this time, altho correct the information is not complete. I am a wildlife photographer, and I was fortunate to get to try out both the R5 and the R6, thank you Canon. I really never was a fan of mirrorless until I tried them. old Electronic View Finders lagged after you pushed the shutter button and many times you would miss the shot. Not with these two cameras. The EVF doesn't black out when shooting it stays lit The auto focus is amazing on both these cameras, better than anything else I have ever used Canon jumped ahead of everybody with these two beasts. Sorry Sony. As for lenses with the adapter you can use all of your old Canon lenses and they will be as sharp as they will allow. Internal stabilization coupled with lens stabilization I can hand hold an eight hundred mm lens and get sharp focus. I ended up buying the R6. Only 20 mp but the sensor is reported to be the same amazing sensor as the 1DX and it has the same processor to boot. I usually advocate to invest in glass not cameras. Being a wildlife photographer I normally use the Canon 7D and the 7D MKll. Here is a full frame camera with a magnesium frame that focuses on the eye of wildlife and keeps focus, shoots up to 20 Frames Per Second, has great video, Both the R5 and R6 are amazing machines.

My Sony a9 gives me everything I have ever wanted in a mirrorless camera. On my Sony 200-600 and 600 f4 I have nailed everything I have aimed my Sony at. I am sure the R5 and R6 preform. But in the hands of competent photographers, Sony and Canon are really good. To say one is ahead of another brand shows jumping to quick conclusions without thorough understanding of the capabilities of each brand.
Below is a point and shoot grab shot at 300 yards of an Osprey with catch. Sony a9, 200-600mm.
I would love to compare what you get with your R5 and R6. Please post an image you have shot with the R5 and R6 and then we can compare. Thanks