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 225mm with most camerasFocuses down to 1:1 magnification ratio at its closest working distance of 15 inchesA lens hood, tripod socket TS-21, front & rear lens caps and carrying case are included with the lens

Lens Construction	16 Elements in 12 Groups
APO Tele Converter	1.4X MF 2X MF
Angle of View	16.4º
Number of Diaphragm Blades	9
Mininum Aperture	f22
Minimum Focusing Distance	38 cm / 15 in
Working Distance	24cm / 9.56in
Filter Size (mm)	72
Maximum Magnifications	1:1
Dimensions (Diameter x Length)	79.6 x 137 mm/3.1 x 5.4 in
Weight	895g / 31.6oz.
Corresponding Mounts	Sigma HSM CONV Nikon HSM CONV D G Canon HSM CONV FourThirds HSM
HSM - Hyper-Sonic Motor CONV - APO Teleconverter EX D - Distance Information Function G - G type Nikon mount lens * Nikon Mount: Does not have aperture ring * 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.