Distortion, Diffraction, Peripheral Illumination and Chromatic Aberration Correction along with Digital Lens Optimizer available for in-camera aberration correction
Single SD/SDHC/SDXC (UHS-II compatible) memory card
As you know Wildlife Photography is very different from other forms of photography. It is tough enough to find and keep up with the wildlife. There is no time to fumble around with camera buttons while trying to keep one's eyes on the action once it is located.
Sadly, the EOS R and EOS RP do not do fit any of my requirements except the feel and EVF of the camera is good. As expected, the pro model of the EOS R may be announced some time in the last quarter of 2019 to compete with the Sony A9, Nikon Z7, Panasonic S1 R, etc.
My question to Canon is - Why be a Johnny-come-lately follower rather than an industry leader?
There is NO technical reason why Canon cannot make a full frame mirrorless camera that resembles the EOS-1 body and uses the EF native mount. It is totally doable. The compromise is made because the marketing department thinks more photographers will prefer a lighter, smaller camera - one of the main selling points of the mirrorless camera to begin with.
"Yes, we are aware that mechanical stabilization is an important demand from the users, but considering the positioning of the EOS R, we decided not to integrate the IBIS […] because our priority was compactness. The compactness we wanted to have was not compatible with such a system. But of course, in the future, we will be able to answer them. This is our first model. We still have room for improvement. For the memory location, it is a question of compactness and priority for the photographers covered by the EOS R. We believe that one location is enough. And for the video, it’s the same answer. We believe that the intended target will be satisfied with the proposed modes." Canon knows it is playing catch up to Sony in the high end mirrorless space. I hope they will not be distracted in spending too much time and money on beefing up the EOS-R line and delay some of their DSLR and EF lens upgrade. After all, the big prize - 2020 Olympics in Tokyo is just round the corner. How many pro photographers around the world do you think will be using the EOS-R to capture images of the games?
Over the next couple of years, one will hear all the wonderful new features and performance of the EOS-R and other full frame mirrorless cameras from the paid and 'unpaid' pundits, like superior 4K/near 8K video, in body image stabilization (IBIS), low light performance, unmatched ergonomics and mobility from a lighter body, etc.
The truth is many features and functionalities of high end DSLRs and Mirrorless will converge in the future until there is a almost a difference without a distinction. The real question is, how many photographers are ready to trade in or add another camera/lens combo to their current DSLR/lenses inventory.
The use of an adapter and the small size of the EOS-R prevent the new camera from functioning like the tradition EOS high end models. For those who like good performance and compactness wrapped in a small package, high end mirrorless cameras may be your solution. Personally, I am not willing to make this trade off to gain compactness and a little weight reduction.
The rumored specs of Canon's upcoming high end EOS R model will come with features and functions similar to pro DSLRs, a 70MP+ sensor, IBIS, dual card slots, joystick, etc.