Light & Motion continues their innovation in underwater digital photography with the introduction of the Tetra 5050 for the 5 megapixel Olympus 5050 digital camera. The Tetra 5050 has all the proven features and reliability of previous models plus the addition of the newest ROC strobe control system. The new ROC system features a double flash exposure system that provides TTL type exposure control as well as 12 manual power settings o­n most TTL strobes. The Tetra 5050 makes getting that perfect shot a lot easier. [tetra page at light & motion]