Each of the owners of a TG-1 is or wants to be, I recommend purchasing the CLA-T01. Not only that, the option to use the teleconverter (TCON-T01), Fish-Eye (FCON-T01) or a 40.5 mm filter is, but also to protect against scratching. Because the adapter has a lid, which allows you to close the camera scratch-safe. Desweitern I'm also not have to worry regarding the stability of the water protection up to 12 meters, because the Adapter sits still on it fixed, as the gray, which is installed by default.