• Lens construction: 16 elements in 12 groups, with 2 FLD elements, 2 SLD elements and 3 aspherical elements
• Internal focusing
• Compatible with high-speed autofocus
• Stepping motor
• Compatible with lens-based optical correction
  * Function available on supported cameras only. Available corrections may vary depending on the camera model.
• Nano Porous Coating
• Super Multi-Layer Coating
• Water and oil repellent coating (front element) Focus Mode Switch
• Support DMF, AF+MF Petal-type lens hood
• Simple dust- and splash-proof design
• Designed to minimize flare and ghosting
• Every single lens undergoes SIGMA's proprietary MTF measuring system "A1" 9-blade rounded diaphragm
• High-precision, durable brass bayonet mount
• ‘Made in Japan’ craftsmanship

Focal Length . 28 mm - 70 mm
Minimum Aperture . F22
Lens Construction 16 elements in 12 groups
Angle of View (35mm) 34.3°
Number of Diaphragm Blades 9 (Rounded diaphragm)
Minimum Focusing Distance 38 cm / 1.5 in
Maximum Magnification . 1:3.3
Filter Size 62 mm
Dimensions Diameter: 72.2 mm × 101.5 mm / 2.8 in × 4.0 in
Weight 470 g / 16.6 oz