Focal Length & Maximum Aperture: 14mm f/2.8
Lens Construction: 14 elements in 11 groups
Diagonal Angle of View: 114⁰ (on full-frame cameras)
Focus Adjustment: AF with full-time manual
Closest Focusing Distance: 7.9 in. / 0.2m
Filter Size: Gel filter holder at rear of lens
Max. Diameter x Length: 3.2 in. x 3.7 in. / 80mm x 94mm
Weight: 22.8 oz./645g