UV: The CCD or CMOS sensor of a digital camera is very susceptible to reflections-this kind of stray light can spoil your photos Hoya Pro-1 Digital UV Slim Camera lens filter can effectively reduce reflectivity and improve your image. Reduced internal reflection means clearer images and greater contrast. CPL: Light rays which are reflected by any surface become polarized and polarizing filters are used to select which light rays enter your camara lens. PL-CIR (Circular Polarizing) filters allow you to remove unwanted reflections from non-metallic surfaces such as water, glass etc. They also enable colors to become more saturated and appear clearer, with better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds. HOYA's polarising filters do not affect the overall color balance of a shot. Item Specifications To Fit: Camera Shape: Circular Filter Size: 52mm,55mm,58mm,62mm,67mm,72mm,77mm,82mm Package Includes: 1x Hoya Filter