This new lens features completely redesigned optics for better contrast and sharpness at the outer edges, and a reduction in chromatic aberrations.Lens Construction: 14 elements in 11 groups Diagonal Angle of View: 114° (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, Weight 3.2 in. x 3.7 in. / 80mm x 94mm 22.8 oz./645g (lens only)
