The Canon 5D mark IV has a newly designed full frame sensor giving a highly detailed 30.4 megapixel image. The new sensor also gives you 4K video up to 30fps and 1080p video up to 60fps. For those who prefer an optical viewfinder for stills photography, this camera continues to be popular.
The Canon 5DSR packs a 50.6 megapixel sensor into a familiar DSLR body. This means you get images with resolution rivalling some medium format systems, while still being able to use the huge range of EF mount lenses, an advanced autofocus system, and a familiar workflow.