Hoya 40.5mm CIR-PL Prime-XS

Hoya 40.5mm CIR-PL Prime-XS

The Hoya CIR-PL Prime-XS is a circular polarizing filter for lenses with a 40.5mm filter thread. Reflections from water, glass and other non-metallic surfaces can hide detail and make images look flat; this filter lets you bring those reflections into balance. By turning the front ring you increase or decrease the polarizing effect, so you can reveal detail beneath the water's surface, tame window reflections or cut glare on wet foliage.

A polarizing filter is an excellent tool for vibrant outdoor photos. By reducing reflected light, the Prime-XS enhances colour saturation and the separation between elements in your scene: deeper blue skies, more defined clouds and richer greens. How strong the effect is depends on the light, your shooting angle and the filter's rotation. The filter has a 10-layer coating and a polarizing film between two glass elements, giving you effects that are hard to reproduce accurately in post-processing.

The slim aluminium screw-in frame is designed to minimise the risk of mechanical vignetting on compatible wide-angle lenses, and the front thread leaves room for a compatible lens cap. That makes the Prime-XS ideal for travel, landscape and everyday photography, with both digital and film cameras. Expect about 1⅔ stops of light loss (filter factor 3) and check your lens filter size beforehand.