Focal Length 24 to 70mm Aperture Maximum: f/4, Minimum: f/22 Camera Mount Type Canon EF Format Compatibility 35mm Film / Full-Frame Digital Sensor Angle of View 84 to 34 Minimum Focus Distance 7.87" / 20 cm Magnification 0.7x Maximum Reproduction Ratio 1:1.4 Optical Design 15 Elements in 12 Groups Diaphragm Blades 9, Rounded Image Stabilization Yes Autofocus Yes