This is exactly what I have added myself. In dark rooms where you can not flash or a skyline at dusk. By fixed focal length you need to be concerned about the high quality of picture do not worry. Only a maximum open aperture you missed before the focus, one wants to have sharp. But that is not a lack of objective, but a fact with which one has to learn to deal. The housing is made of plastic. In order to win any beauty contests. But there is wonderfully light and small. One can just once so still bring in your pocket. The bayonet is made of metal, the glass aspherisch. Since there is nothing to complain about.
