|Lens Construction||19 elements in 14 groups|
|Angle of view (35mm equivalent)||84.1°-23.3°|
|Minimum focusing distance||45cm / 17.7in|
|Dimensions (Diameter x Length)||88.6mm x 109.4mm / 3.5in x 4.3in|
|Number of diaphragm blades||9 (rounded diaphragm)|
|Maximum magnification ratio||1:4.6|
|Weight||885g / 31.2oz|
Update: It looks like Sigma removed the webpage from their server. However, an official announcement is surely not far off.