Slim filter frame - avoids vignetting on wide angle lenses whilst still holding a lens cap By naming this series 'UX', HOYA aims to offer users better individual experiences through all the activities connected with their photography. Hoya UX Series Filter Hoya 43mm Fusion One Next PL-CIR Filter - Buy Today 0277 Hoya 43mm Ux Cir-pl Camera Filter Replacement The 'UX' series is a design concept, aimed at users wishing to improve their photography. Used Hoya 82mm HD CIR-PL Filter Polarising filters' structure incorporates a polarising film, sandwiched between two pieces of glass. 'UX' in the series name stands for User eXperience, inspired by the memorable experiences that users acquire through using these filters. Increases saturation and improves contrast It is used to control reflections from non-metallic surfaces such as water, glass, leaves and blue skies, increasing saturation and improving contrast. It offers HOYA's famous quality, at reasonable prices, with basic and contemporary features. Hoya filter UX UV 43mm - Filtrid HOYA's 'UX' CIR-PL filter is a renewed version of the previous Slim CIR-PL model. The UX CIR-PL filter can be used with both film and digital cameras. This filter can control effectively the reflections on non-metallic surfaces such as water... They also have front threads which are able to hold other filters and lens caps.