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 105mm with most camerasFocuses down to 1:1 magnification ratio at its closest working distance of 10.1 inchesExtremely compact weighing only 18.5 ounces & measures only 3.7 inches long.A lens hood, front & rear lens caps and carrying case are included with the lens.

Lens Construction	10 Elements in 9 Groups
Angle of View	34.3º
Number of Diaphragm Blades	9
Mininum Aperture	f22
Minimum Focusing Distance	25.7 cm / 10.1 in
Working Distance	11.2cm / 4.4in
Filter Size (mm)	62
Maximum Magnifications	1:1
Dimensions (Diameter x Length)	76 x 95 mm/3.0 x 3.7 in
Extended Dimensions	/ 5.7 in
Weight	525g / 18.5oz.
Corresponding Mounts	Sigma Nikon Canon Sony/Minolta Pentax
* Nikon & Pentax Mounts: Mount Does not have aperture ring * Nikon Mount: NO built in motor lens: NOT compatible with D40, D40x, D60, D3000, D5000