Kenko Zeta 55mm ZR SMC Ultra Thin Circular Polarizer Filter

Zeta Wideband C-PL (W)
Ultimate Color Enhancement
C-PL 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. Kenko's C-PL filter do not affect the overall color balance of a shot.