For this ocean sunrise picture I used a 3 stop graduated neutral density filter made by Singh-Ray to balance the bright(er) sky with the darker blue water in the foreground. A good neutral density filter transitions from a dark grey section to a clear section so that all you need to do is line up the filter with the horizon line and the light intensity will be balanced. Tubbataha UNESCO World Heritage coral reef; Palawan liveaboard scuba dive trip in the Sulu Sea, Western Philippines.