Greystone CPL Filter Optical Glass Multi-Coating Nano Coating Waterproof Scratch Resistant SLR Camera Lens

About this item Improved Image:The CPL filter helps to reduce reflections and glare by filtering out light that has become polarized due to reflection from a non-metallic surface. A polarizing filter arranges and filters directionally polarized light perpendicularly to the reflected light, allowing for the absorption of much of this light. This results in a noticeable reduction of glare and reflections from non-metallic surfaces and an increase in the saturation of skies and foliage.

Ultra Slim: To prevent internal ghosting and reflections, the glass includes 10 layers of anti-reflection coating. These coatings also offer greater protection to the filter substrate and helps it to stay clean for longer than with uncoated filters.

Circular Polarizer:Circular polarizers are ideal for use with digital cameras and autofocus lenses where a linear polarizer will often disrupt auto exposure and focus features. 2.5x filter factor reduces exposure by 1.3 stops.

Optics Glass:This polarising filter is constructed from optical glass for clarity as well as color fidelity and features an aluminum-alloy filter ring that can be rotated in order to adjust the intensity of the polarization effect.

Easy Installation:The filter ring can be rotated to adjust the intensity of the polarization effect.Strongest effect when used at a 90° angle from the sun. 49mm front filter threads allow for use with other filters.Top knurling to provide a more textured grip when mounting or removing it from a lens.