The Bower 0.42x widens the camera's angle of view by multiplying the focal length of the digital/video camera by 0.42 times, which more than doubles the angle of view of the camera. Great for landscapes or recording in situations where a little creative curvature of field, or fish-eye effect, is wanted for a certain style.
Rear element becomes a Macro lens
In the Box
Bower 46mm Super Gold IR .42x Wide Angle Fisheye Lens with Macro