The Sony VCL-HG0872 High Grade Wide-angle Lens adapter adds to your camcorders zoom lens to provide an even wider angle of coverage (0.8x) for those times when you are shooting in a confined space or for shooting scenery.
The High Grade series of lenses feature optical glass lens elements, The wide-converter is useful indoors as well, since you'll be able to fit more of your subject into the picture frame.