Semlos 37mm CPL Glasses Protector Lens Filter + Cover for Gopro Hero 3 3+ Camera

Description:
A polarizing filter, used for both color and black-and-white photography, is colourless and does not affect colour balance, but filters out light with a particular direction of polarisation. This reduces oblique reflections from non-metallic surfaces, can darken the sky in colour photography (in monochrome photography colour filters are more effective), and can saturate the image more by eliminating unwanted reflections.
The main function of the Circular Polarizer filter (CPL Filter) is eliminating the scattered light in the air, as well as the reflected light of the metal, glasses and liquid.It is only allow the parallel light through the lens only,so that the camera can get a better picture such as blue sky,white cloud, clean water and so on. When you rotate the CPL filter in its mount, the effects will show up immediately.

Features:
37mm Universal Filter Adapter for Naked Gopro 3 + CPL filter + Protecting Cap
Aluminum material(lightweight), Black Anodise(Durable), CNC cutting(Precision)
Caution: Include 37mm Adapter + 1pcs CPL filter + Cap

Specifications:
Color: Black
Material: Optical Glass, Aluminum Alloy
Compatible Brand: Gopro
Compatible Models: Hero3+/Hero3
Lens Diameter: 37mm
Anti-Shake: No
Viewing Angle: 135~170°
Focal Distance: 0 cm

Package Contents:
1x 37mm CPL Filter Set(1 * 37mm CPL Filter;1 * Filter Adapter;1 * Lens Protective Cap)