Olympus POSR-053 Anti-Reflecting Ring for Underwater Housing

The Olympus POSR-053 Anti-Reflecting Ring is a spare or replacement anti-reflecting ring for use with the PT-058, PT-056 and PT-053 underwater housing. It blocks the writing, such as aperture, focal length, etc., on the front element of your lens from being reflected in the front interior of your housing's lens port. This prevents the writing from showing up in your photos or videos.