optical glass Sufficiently clear to refract sunlight to take fantastic pictures, two different shape meets your different needs Compact and Portable to carry, suitable for outdoor travel photography This photography glass prism is a fantastic photographers, fashion bloggers or show your kids a rainbow Triangular prism with 1 / 4 in thread could help you connect it to the camera easily Triangular Prism could meet your different needs to creat amazing pictures.Great for photographer gifts to add for creative effects in photo, film or video Such as rainbow colors, dreamy looks, beautiful or light With small photographic accessories, you don ' for t even need to use for The Triangular Prism is not only clear and beautiful, but also provides rainbow color light effects for you to take unique photos, Manufacturer: TFAOYS