70-210mm F/4 Di VC USD w/Hood, CANONCanon EF-Mount Lens/Full-Frame FormatAperture Range: f/4 to f/32Ultrasonic Silent Drive Autofocus MotorVC Image StabilizationTelephoto zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 112-336mm equivalent focal length range.Constant f/4 maximum aperture affords consistent brightness throughout the zoom range and offers improved control over depth of field.VC image stabilization helps to minimize the appearance of camera shake by up to 4 stops or more effective handheld shooting in difficult lighting conditions.An Ultrasonic Silent Drive autofocus motor, along with a High-Speed Dual Micro-Processing Unit, delivers quick and precise focusing performance to suit working with moving subjects. This motor also affords full-time manual focus control, and it is possible to focus on subjects as close as 3.1' away with a maximum magnification ratio of 1:3.1.Internal zooming mechanism maintains the overall lens length