The Canon RF 24-70mm f/2.8L IS USM is a versatile wide-angle to portrait-length lens characterized by its bright, advanced, and intuitive design.  The optical design incorporates a series of aspherical and Ultra-Low Dispersion elements, which greatly reduce a variety of aberrations throughout the zoom range in order to produce sharp and clear imagery. An Image Stabilizer also compensates for up to five stops of camera shake to help produce sharper handheld shots in difficult lighting conditions. Bright f/2.8 constant maximum aperture maintains consistent illumination throughout the zoom range and suits working in low-light conditions as well as affords increased control over depth of field for working with selective focus techniques. Three aspherical elements are used to correct spherical aberrations and distortion for improved sharpness and accurate rendering. An Optical Image Stabilizer helps to minimize the appearance of camera shake by five stops to better enable working in low-light conditions and with slower shutter speeds. This focusing system also affords full-time manual focus control when working in the one-shot AF mode. A protective fluorine coating has been applied to the front and rear elements to resist fingerprints and smudges and to make cleaning these elements significantly easier.