Hybrid IS Compensates for Angular and Shift Camera Shake during Macro Shooting. High Image Quality and Bright, Fixed f/2.8 Aperture Telephoto Macro RF Lens. High Speed, Smooth and Quiet Auto Focus with Dual Nano USM. Spherical Aberration (SA) Control Ring Allows Adjustments to Shape and Character of Foreground/Background Bokeh. World's First Medium Telephoto Macro Lens with a Maximum Magnification of 1.4x. Optical Image Stabilizer with up to 5 Stops of Shake Correction