Used Ikelite Nikon D90 Underwater Waterproof Camera Housing 6809.1A full featured and durable waterproof housing for Nikon D90 DSLR cameras. Suitable for scuba, snorkel, surf, pool, and any application in or around the water. This housing requires the addition of a compatible Four Lock (FL) Lens Port for waterproof operation. Lens Port not included. The True TTL Advantage Other housings simply waterproof your camera. An Ikelite TTL housing improves your photos. TTL or "Through The Lens" flash metering means the