Bob,
When I put my UW-DVR in the water the fish are curious about the camera and will look into the lens, some will peck at it.
After the initial interest, they school up around the camera, seemingly waiting for an audition. When a large predator appears they scatter and then the predator and possibly a predator buddy or two will show up and hang out by the camera.
When anchored over structure with sonar running on both ends of my boat the fish school up under the sonars. This is great for vertical jigging.
There is nothing scientific about these observations, but I think fish may be somewhat attracted by electronics and not fearful of them as some suspect.
