Precision Design 0.25X Super AF Fish Eye Lens for Film & Digital SLR Lenses by Canon All glass lens elements; Exceptionally large depth of field Reduces your lenses focal length by an amazing .25X; Offers attention-grabbing and distinctive perspectives Optimized to work with almost any lens with a minimum focal length from 18mm to 50mm (ANY LENS WITH A FILTER SIZE OF 49mm, 52mm, 55mm & 58mm Can offer ultra wide angle, diagonal fisheye and circular fisheye images; Especially useful for real estate or shooting in confined spaces Made in Japan; 6 Year Warranty