Focal length: 28mm
Maximum aperture: 1.8
Minimum Aperture: 22
Lens Construction: 10 Elements in 9 Groups
Angle of View: 75.4 degrees
Number of Diaphragm Blades: 9 Blades
Minimum Focusing Distance: 20cm/7.9 in.
Maximum Magnification: 1:2.9
Filter Size: 77mm
Dimensions (D x L): 83.6mm x 82.5mm (3.3 in. x 3.2 in.)
Weight: 500g (17.6 oz.)