Apparently, this user prefers to keep an air of mystery about them.
77 Why are lenses always round in shape? Jul 15 '13
6 Why do lenses have different diameters? Jun 4 '13
5 Is this the level of sharpness and detail I can expect from a Nikon D7000 and 18-105mm lens? Dec 16 '12
5 Why is focal length measured in millimeters? Sep 18 '13
4 Can I control if the in-body AF motor is used instead of the lens AF motor on my Nikon? Jan 29 '13