There's simply nothing like a 180 degree fisheye to turn ordinary scenes into extraordinary photographs. This digitally optimized diagonal fisheye lens is equipped with a new multi-layer coating technology that reduces both flare and ghosting. This also ensures an accurate color balance and high definition results. Thanks to its unique 8-element/7-group design and multi-coating, contrast and edge definition are excellent. A rear filter holder accepts gelatin filters. Weighs only 13 oz.4 Year Sigma USA Authorized Dealer WarrantyIn addition to the 1 year international warranty, when you register this EX lens with Sigma you will receive an extra 3 year extended warranty against defective materials or workmanship. Click here to register your warranty »