D500 will let you keep your lenses. I'm not much at video, only done one, but found it easy to operate and got pretty good results for first try. Live view for video on the D500 doesn't give the best idea of focus, especially if screen is partially obscured by leveling marker. I shot at ISO 2500 and you could hardly tell. In brighter water at ISO 100, it should be very nice. D500 offers tons of focus choices and great autofocus. Almost too many choices. This has been one of my biggest challenges, as the menu is huge. I've experimented with various focus modes and it's hard to go wrong once you get the basic settings where you want them.
- adamhanlon likes this