SIGMA APO MACRO 180mm F2.8 EX DG OS HSM Lens for Nikon

The Sigma APO Macro 180mm F2.8 EX DG OS HSM is a high performance telephoto macro lens designed for Full Frame sensors but may also be used with smaller APS-C size sensors with a corresponding effective increase in focal length to about 260mm with most cameras. The 180mm F2.8 has a large aperture to handle any lighting scenario and the macro capabilities allow focusing down to 1:1 magnification ratio at its closest working distance of 47 cm. A Hyper Sonic Motor (HSM) ensures quiet, high speed, and accurate autofocusing while an Optical Stabilizer (OS) compensates for camera shake when shooting hand held. The 180mm F2.8 macro also incorporates a floating Internal Focusing system which reduces aberration during shooting working together with three FLD ("F" Low Dispersion) glass elements for superior correction of color aberration. This lens has a rounded 9 blade diaphragm creating an attractive blur to the out of focus areas of the image and is also compatible with Sigma APO teleconverters.

Specifications:
Designed for camera:
Nikon
Focus:
HSM (ultrasonic micromotor)
Lens:
f/2.8 (f/22 minimum aperture)
Focal length:
180 mm
Viewing angle:
13.7°
Lens construction:
19/14 (the number of lenses/groups)
Minimum focusing distance:
47 cm
Aspect Ratio:
1:1
Filter Attachment:
86 mm
Dimensions (diameter x length):
95 x 203.9 mm
Weight:
1.64 kg
Color:
Black
Accessories:
Lens hood LH927-01
Hood adaptor HA927-01