Even the smartest temporary stays a provisional. Who wants to have the camera's internal flash "softer" or less intense, for example, if he needs it only as a master to trigger slave flashes (eg the WL system of Minolta / Sony), which is well served with this amazing simple part. It fits into any camera bag space and simply makes the difference. Even as a fill in the open-air photography in near-field (50 mm focal length / portrait) of the diffuser has been proven.