• FX-format Nikon F-mount cameras & DX mode (36-105mm equivalent)
• Three Special Low Dispersion (SLD) elements 
• Integrated HSM (Hyper Sonic Motor) realizes quick and quiet autofocus, which is further complemented by an optimized AF algorithm to produce smoother focusing performance. The HSM also permits full-time manual focus control simply by rotating the focus ring at any time.
• Optical Stabilizer (OS) system 

Focal Length 24 to 70mm

Maximum Aperture f/2.8

Minimum Aperture f/22

Lens Mount Nikon F

Format Compatibility Full-Frame

Angle of View 84.1° to 34.3°

Maximum Magnification 0.21x

Macro Reproduction Ratio 1:4.8

Minimum Focus Distance 1.21′ / 37 cm

Optical Design 19 Elements in 14 Groups

Diaphragm Blades 9, Rounded

Focus Type Autofocus

Image Stabilization Yes

Filter Size 82 mm (Front)

Dimensions (ø x L) 3.46 x 4.24″ / 88 x 107.6 mm

Weight 2.24 lb / 1020 g

HANDS-ON REVIEW: Sigma 24-70mm f/2.8 DG OS HSM Art