Snydremark wrote in post #19147995
Regardless, you appear to be getting some great usage out of the new kit! I look forward to hearing how the adapter works for you; I'm definitely considering making the line shift in '21 and moving over to the m/l system. I still need to go to my local shop and monkey with one a little bit, as I'm still not confident in switching to an EVF and dealing with the overly bright displays and poor refresh rates that give me headaches. I haven't had time to actually evaluate the EVFs on newer bodies and if they've advanced past that point, there's no good barrier for me.
Actually, that will be my second adapter. I bought one early on, in August I think when just one shop here had exactly that one basic adapter. I'm glad I did because they're still very hard to come by, "sold out" or "expected" everywhere. So the camera arrived some 5 weeks or so later and then it turned out I could "claim" a free adapter from Canon. Which I did, so I'll have two.
I only have the EF > RF basic adapter and it works very well. With my 300/4L or 400/5.6L, or any of my other lenses, there is no difference from using them bare on a DSLR. AF-speed is just as quick and responsive. If there is a difference, it's that focus is dead on in that there is no more front- or back-focusing. I had some problems with that with my 400mm but those problems are now over. I have always been bad at AFM-ing lenses and am glad that's a thing of the past now!
As to switching from a DSLR to mirrorless, that's a tough decision, Eric. I didn't see any other path for myself. I very much wanted a new gen sensor and as there is no 7DIII on the horizon, I decided to take the plunge with the R6. It's a different shooting experience and it's something to get used to, that's for sure!