Olympus POSR-EP08 UW Shading Ring V6340460W000

POSR-EP08 UW Shading Ring The POSR-EP08 Anti-Reflecting Ring for the M.Zuiko 17mm f1.8 and M.Zuiko 12mm f2.0 lenses. This device blocks the writing, such as aperture and focal length, etc, on the front element of your lens from being reflected in the glass of your housing's lens port. This will prevent the writing from showing up in your underwater photos and videos.