Focal Length: 10.5
Maximum Aperture: 2.8
Minimum Aperture: 22
Closest Focusing Distance: 0.46 ft. (0.14m)
Diagonal Angle of View: 180-degrees
10 Elements in 7 Groups
Maximum Reproduction Ratio: 1:5
Dimensions (D x L): 63mm x 62.5mm (2.5in. x 2.5in.)
Weight: 10.8oz. (305g)