Sony hdr as 300 action camera is about the same size as a go pro but i prefer the colors of the sony. Reds and yellows are emphasized. Comes with housing already so no purchasing extra housing. I used the underwater mode all the time and it works very well but above 15 feet the reds are to intense. I have a Big Blue black moly 3 video light which has 2600 lumens. I will probably purchase a second big blue light for a little more even lighting. I used the yellow filter on the big blue light so the yellows look very nice. The light without the yellow filter is 6500k which is a little blue. The filter not sure the kelvin number but it works. The visibility on our dives in Hin Daeng and Hin Muang were about 60 feet