This lens is stupid. Stupid sharp I mean. The IQ surprisingly rivals the 70-200mm f/2.8 IS II and 300mm f/2.8 IS lenses I have tested. The AF doesn't seem as quick when going from MFD to infinity as the Canons, but in the commonly used range, you won't be able to tell a difference. This lens also includes the infamous Sigma paint peel, but it is covered by a very nice black Lenscoat. It includes the case, Sigma leatheryish front cap, a 105mm snap on front cap (holy crap this is huge), rear cap, lens hood and the VERY VERY desirable DG tripod foot which makes carrying this around so much easier.