First of the Liefrungl done without installation instructions. One has to own it come that you only have to unscrew a ring on the lens before the part can be mounted. Due to the very loose fit, it is unusable quasi, because you would lose it in no time. The slats do not close tightly, so that dust and humidity reach the lens anyway. Due to the large dimensions of the camera is bulky and ugly. 2 stars, because the idea is really only good. The implementation, however, is so bad that only remains to use the cumbersome, original lid on.
