LensRentals.com didn't take long doing a teardown of the brand new Canon EOS 5D Mark IV. It looks like the new body shows some build quality improvements and should provide reliable performance in tough environments.
From LensRentals.com
Construction is at least as robust as the recent 5 series releases and better than the Canon 5DIII, which is as it should be. There’s a little more complexity with cables running hither and yon more than in previous Canon cameras, but that isn’t going to affect operations at all. It may make repairs a bit more difficult. And I’m, as I always am, disappointed to see HDMI and USB ports soldered onto the main PCB. They get torn off a fair amount on every camera that’s made this way (which is most cameras that aren’t dedicated for video). On the other hand, the main PCB replacement may not be much more expensive than a sub-board replacement. Read the full article
Rent the EOS 5D Mark IV at LensRentals.com