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Light moves through space in straight lines, vibrating as waves in many different directions. Light which is polarized, however, only vibrates in one plane. A polarizing filter or 'polarizer' is a lens filter which polarizes light along one plane. This can cut non-metallic reflections and enhance contrast under certain conditions.
Polarizing filters contain a layer of polarizing material which is laminated between two glass circles and mounted in a frame. You can then rotate this filter, which affects the amount of light passing through. Even at their 'brightest' setting, however, polarizing filters reduce the amount of light entering the lens - they always cost a stop or so of light.
Polarisers are useful for cutting reflections from water and glass (ie: non-metallic) surfaces. They're commonly used for cutting reflective glare off of windows, or for taking a photo of a lake without a reflection on the lake surface, for instance.
The Circular Polarizer also increases contrast and colour saturation. Recommended for TTL & AF cameras and Video camcorders.
Features:
- Remove unwanted reflections from non-metallic surfaces such as water, glass, etc.
- Enable colours more saturated
- Increase contrast of the pictures
- Fits for the lens which diameter is 58mm
