Circular polarizing filters suppress glare and reflection for optimum image quality. They are effective when shooting through windows or capturing landscapes that include water or blue sky. Restore detail in your photographs with this circular polarizing filter for 49 mm Sony α lenses. The unique Zeiss T lens coating helps minimize reflections between the lens and the filter, while also suppressing unwanted lens flare and ghosting. The result is clearer, sharper photographs when shooting in bright conditions.