Hoya 40.5mm UX II PL-CIR HOYA's New UX II filters replace the original UX range and continue to provide entry level users with the same high quality and features, including a 10-layer HMC-WR multi-coating with anti-reflection and water-repellent capabilities for fingerprint and smudge resistance (UV model), and Low-profile aluminium frame (UV & CIR-PL models) The UX II series design concept aims at users wishing to improve their photography. It offers HOYA's famous quality, at reasonable prices, with basic and contemporary features. 'UX' in the series name stands for "User eXperience", inspired by the memorable experiences that users acquire through using these filters. By naming this series 'UX', HOYA aims to offer users better individual experiences through all the activities connected with their photography. The UX II CIR-PL filter can be used with both digital and film cameras. It is used to control reflections from non-metallic surfaces such as water, glass, leaves and blue skies, increasing saturation and improving contrast. Polarising filters' structure incorporates a polarising film, sandwiched between two pieces of glass. The front part of the filter frame is able to rotate, allowing the polarising film to be positioned at the desired angle. Hoya UX II filters use a low-profile aluminium frame which avoids vignetting when used with wide-angle lenses.