The fisheye cap lens is a cute little addition. It's not a real micro 4/3 lens in the sense that it does not connect to the camera's electronics. It's simply a cap with a non-trivial but manually-operated lens. The switch to open and close the lens is a little primitive, and can be easily bumped open if you have you're storing your camera loosely in a bag. But I find the lens quite useful in many fun situations where one may not want or need a very sophisticated lens, like say, chasing my boy around at the beach.