Hi fearthespear cheers, no filter on the camera its set to u/w mode and the three close ups on macro setting on the camera but i haven,t done anything else with the pics. they were taken in shallow water appx 4-8m and in pretty good vis. I was wondering about a filters but am hoping to get a wide angle lense and mount at some point but its pretty much the same price as the camera and housing again so it will have to wait a while. Flash on the shrimp and crab because they were tucked into a crevice but no flash on the others.