First of all this is my first canon R mirrorless camera. I am coming from years of using a 5D Mark IV and 7D Mark II and their predecessors. To me it was like going from my AE-1 film camera to my first digital camera. Quite honestly I am still a little bit shell shocked by how good this little camera is for the price I paid for it with the basic R/EF adapter.
I was dreaming that this camera might make my older EF 200mm 2.8Lii lens into a killing machine. I didn't expect it to actually do it and the same with all my other EF lenses (jury is still out on my 24-70 F4L).
The In camera image stabilization is far better than I could have possible imagined. I mean that same 200mm can take great photos indoors at 1/30th of a second with this APS-C sensor. Image quality is far better than I expected. The Eye AF and autofocus is a game changer with Wildlife and birds in flight. It does have its limitations and struggles at times with bright skies and heavy branches.
Taking pictures with hummingbirds has easily tripled my keeper level and it is easily equal to my best 5D4 hummingbird images.
In 8 days I have taken over 20,000 images of mostly birds and it just feels like cheating. It's that good.
Of course it is not perfect and has several deficient areas that other more expensive cameras don't have. But for me, it just makes me smile. Not just sometimes, but nearly all the time!