This is just a quick compare between the Sony a7r mark iv, the Panasonic S1R and the Nikon Z7, all top of the line, flagship photo-centric photography cameras. The Canon EOS R is not in this category, which is why it was not considered. Soon Canon will release their photo-centric pro camera, and I look forward to that camera. For now, we just have these big three, high-resolution photo cameras, (that also shoot great 4k video, but photo first, video second). Sony wins for now, but it’s only summer 2019, more cameras are on their way. Also, the Sony a7r mark iii is now discounted to 2500.00, which is an amazing camera and easily competes with the Panasonic S1R and the Nikon Z7, and beats both in price and affordable lens selection (without adapters).