Light rays which are reflected by any surface can become polarised so polarising filters are used to select which light rays enter your camera lens. CIR-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. HOYA's polarising filters do not affect the overall color balance of a shot.

• Hardened optical glass that has 4 times the breaking strength in ANSI standardized testing (ANSI Z80.3 : 2001) where a steel balls of varying size and weight were dropped from a height of 50 inches onto the glass.

• High Density Sharp Cut Glass
• Chemically Enhanced Optical Glass is 4x Stronger than Normal Glass

• 8 Layer Anti-Reflective Multi-Coating
• Water & Oil Repellent Top Coating is Oil and Stain Resistant for Easy Cleaning

• Wide Angle Lens Compatible Ultra Thin Aluminum Frame
• Glass Mounted with High Pressure Press Technology, No Retaining Rings