The biggest thing for video folks is the R3's hotshoe pins like Sony's multi interface shoe. All future Canon MILC bodies will probably have this as well. It is convenient to be able to use audio accessories without running 3.5mm cables or supplying extra power to the accessories. But the biggest issue for new R3 owners will be constantly losing those damn hot shoe caps on the body and flash to protect those pins.
Upvote
0