Circular polarizing filters reduce glare and reflections for optimal image quality. They are particularly effective when photographing through windows or capturing landscapes that include water or blue skies. Restore details in your photographs with this circular polarizing filter for 49 mm Sony α lenses. The unique Zeiss T coating helps minimize reflections between the lens and the filter, while also suppressing unwanted light reflections and ghosting. The result is clearer, sharper photographs in bright lighting conditions.