The Sigma 100-400mm 5-6.3 DG HSM OS contemporary is a state-of-the-art telephoto zoom that brings a new level of portability and quality to the super telephoto market. Touting Sigma's optical stabilizer (OS), the Sigma 100-400mm 5-6.3 contemporary is highly compact and lightweight compared to similar products on the market. A push/pull zooming function and a new hyper sonic motor (HSM) allow for a more responsive approach to photography while a 1:3.8 macro feature can be utilized from up close or from a further distance. Like each and every global vision lens, the Sigma 100-400mm contemporary art is handcrafted at our single factory in Aizu, Japan and undergoes individual evaluation before leaving Sigma's facility.Full frame lens with APS-C compatibility, compact size meets strong image qualityIdeal Use: Travel photography, wildlife photography, nature photography and bird photographyIt retains all of the positive characteristics of Sigma 150-600mm for image quality, optical stabilizer (OS), updated hypersonic motor (HSM) focus limiter and push/pull zoomRegarding the optical performance, this lens has four SLD glasses to minimize the chromatic aberration