Aloha everyone, In two weeks I will head to Tonga to spend some quality time swimming with humpbacks. I will be leading a group of photographers but since my camera will shoot video, I want to I've it a try. I have a Nikon D810 in a nexus housing and will be using a 16 mm fish eye lens. I have been thinking about setting the camera in manual and using fast shutter speed and F-8 with a floating ISO. Do any of you have experience shooting video with this camera. Any and all insight is appreciated.