The sigma wr water repellent range of filters are a new concept that suit the new ldquosgvrdquo range of high optical performance lenses sigma wr filters enable easier handling while shooting and feature excellent water and oil repellent as well as having an antistatic function these wr filters are available in various sizes both in ldquouvrdquo ldquocircular pl polarizingrdquo and clear glass protector interchangeable lenses are required to perform their best in different