Canon G15 Housing Key Features ✓ Access to important camera functions ✓ Electrical TTL bulkhead ✓ See the O-ring seal ✓ Wide angle options ✓ 200ft (60m) depth rating TTL FLash Exposure The only full-featured housing including hard-wired Canon TTL flash exposure. Trigger an Ikelite DS Substrobe with automatic exposure without firing the camera's built-in flash. This saves battery life, improves recycling time and provides the most accurate exposure! Clearly Superior Design The durable polycarbonate and acrylic construction provide a unique view of the camera to ensure correct waterproof installation and confidence underwater.