I've done a fair amount of photography from a kayak, including the caves on Lake Superior. If you are using a kayak I will give you a warning. When you look through a camera your body is no longer keeping balance with the boat. Unless the boat is very wide and stable there's a good chance you will tilt to one side and capsize (roll) the boat. You're best off trying to point the camera and look over it and not through it. Yes, fast film, hyperfocal.


Kent in SD