Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens EF-S ultra wide zoom lens. Drive System-Lead screw and rack system driven by stepping motor Focal Length & Maximum Aperture: 10-18mm,1:4.5 - 5.6 Closest Focusing Distance: 0.72 ft. / 0.22m Stepping motor for noise-free video shooting Optical image stabilizer