Focal Length & Maximum Aperture: 35mm f/1.4 Subwavelength Coating (SWC) helps significantly reduce lens ghosting and flare.Lens Construction: 14 elements in 11 groups Diagonal Angle of View: 63° Focus Adjustment: AF with full-time manual Closest Focusing Distance: 0.92 ft./0.28m Filter Size: 2.8 in./72mm diameter Max. Diameter x Length, Weight: 3.2 x 4.2 in., approx. 26.8 oz. / 80.4 x 105.5mm, approx. 760g