Conceptually mature Adapter ---- if because the processing would not be so sloppy. Compared to many reviews I've read, I've probably caught a garbage model: The rubber pad points at the eyepiece screw were already unpacking no longer neatly in place. The lack could be easily remedied. Worse is that the screw for attaching the camera on the rail is too long. I could only manage with the help of washers me. Already clear that different. Camera models have different insertion depths. That should be known to the supplier. Either the mounting screw from the guide rail should be removable and therefore replaceable. Or, you should notify the customer of the o. A circumstance.