Canon 5D Mark IV
One of the biggest releases last fall was the much anticipated Canon 5D Mark IV. If you need your wedding cameras to capture both stills and video, this is the perfect hybrid. Some new features on the video end are DCI 4K video and a refined implementation of the Dual Pixel Autofocus. This lets you use the touchscreen LCD to perform touch-to-focus pulls at varous speeds across nearly the entire frame. It really is a breeze to use and opens up a ton of avenues for creativity.
Pair that with other helpful features such as wireless control with the Canon Camera Connect app and you've got a remote camera you can record and focus from your smartphone. We're sure you can think of a ton of ways to use a remote camera without needing a second shooter. Should you upgrade from a Mark III to a Mark IV? We can say that the improvements are much greater than the specs would suggest. Not sure? Rent one and try for yourself.