PT-059 underwater housing

The TG is waterproof to 15 m (50 ft) by itself, which is exactly the depth at which a Red Sea reef starts getting interesting. The PT-059 takes it to 45 m (148 ft) and, unlike most third-party cases, leaves every control usable, so Microscope mode and exposure compensation stay available with cold hands. Its port takes a 52 mm thread, which matters when you go shopping: most wet lenses and ring lights are 67 mm, and they need a 52-67 step-up ring that nobody remembers to order. This is the one on my own TG-6, and with a camera of that price inside, the saving on a copy is not worth thinking about.