I-DIVE Wide Angle Lens w/Dome (X 0.42)

UWL-04 is a fisheye dome lense for 28mm digital camera. With this dome lense you can have almost 165 degree. 

Specification :
Lens Construction : 5 Groups, 5 Elements
Working Depth : 60M/200Ft.
Focal Length (Underwater) : Infinity (Not Usable in Air)
Magnification : 0.42X
Mounting : M52 Thread, M52 to M55 Step-up Ring
Lens Material & Coating : Hard Coating on Plastic Lens Front Surface, Multi Layer AR Coating on Glass Lenses
Barrel Material : Aluminum Alloy with Black Anodize
Weight : 660g
Dimension : Φ157mm X 92.1mm