Designed for use with full frame digital SLR cameras. May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length to about 750 with most camerasHSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focusAmazingly compact. Approximately 14 inches long & slightly less than 7poundsInner focusing system which enables responsive & fast auto focus speed and overall length does not change during focusing.Soft case, lens hood, circular PL filter are included. It is equipped with fixed tripod socket.

Lens Construction	11 Elements in 8 Groups
APO Tele Converter	1.4X MF 2X MF
Angle of View	5º
Number of Diaphragm Blades	9
Mininum Aperture	f32
Minimum Focusing Distance	400 cm / 157.5 in
Filter Size (mm)	46 (Rear)
Maximum Magnifications	1:7.7
Dimensions (Diameter x Length)	123 x 349.5 mm/4.8 x 13.8 in
Weight	3100g / 109.7oz.
Corresponding Mounts	Sigma HSM APO CONV EX DG Nikon HSM APO CONV EX DG D Canon HSM APO CONV EX DG Sony/Minolta APO CONV EX DG Pentax APO CONV EX DG
HSM - Hyper-Sonic Motor APO - Apochromatic CONV - APO Teleconverter EX EX - EX Lens DG - DG for Digital D - Distance Information Function * Nikon Mount: Built in motor lens: compatible with D40, D40x, D60, D3000, D5000 * The appearance, specifications, and the like of the product are subject to change for improvement without notice.