That sounds great that the Ace Pro performs well without lights. When you aren't using lights, how are you carrying the camera...selfie stick/in your hand? Does that mess with video stability at all?When I'm just fun diving / lobster hunting / doing deco dives on deeper wrecks where I don't want to bring lights, I'll bring the Ace Pro clipped on with a bungeed boltsnap. It does a respectable job with no video lights, even down past 150'. Stable video, good low light resolution, and the colors are surprisingly well balanced for the depth.