Model A16 

Focal length 17-50mm 

Angle of view (diagonal angle of view) 78°45'-31°11' (equivalent to APS-C size) 

Brightness F/2.8 

Lens construction 16 elements in 13 groups 

Number of aperture blades 7 

Minimum focus distance 0.27m (throughout zoom range) 

Maximum magnification 1:4.5 (at 50mm: Minimum focus distance 0.27m) 

Overall length 83 .2mm 

Maximum Diameter φ73.8mm 

Filter Diameter φ67mm 

Weight 430g* 

Minimum Aperture F/32