The Kenko KRW-05 lens is specifically designed to be used with high quality Digital Video Cameras. It is attached to the camera to give a wide-angle effect by doubling the focal length of the original lens. 

Specifications
Model:	KRW-05
Magnification:	0.5x
Construction:	3E / 3G
Mount Thread:	58mm
Adapter Rings:	None
Filter Thread:	None
Diameter:	3.25 in.(82mm)
Length:	3 in.(76mm)
Weight:	48 oz.(1,360g)