We were very skeptical earlier in the year when the R5 specs were just a rumor. Canon has not really been delivering powerful video features out of their Cinema line and we expected this new camera to be a crippled continuation of the trend. We were not only wrong but now know that Canon is banking the future of the EOS line on cameras like the R5 with features that really put it in a class all by itself.
The original video darling was the EOS 5D Mark II which made it possible to use the EOS line of lenses with a video mode that delivered good enough quality for the web and some careful productions. The camera had issues like severe rolling shutter and a tendency to moire and alias so bad that many shots were really ruined. However, the excellent Canon color quality and lens choices made it so popular that it really forced companies to change the video options forever. Now Canon intends to do as big a splash with the introduction of 8k video internally on the new camera.