The RF100mm f / 2.8L Macro IS USM is in a league of its own . As the world ’ s first telephoto macro lens with maximum shooting magnification of 1.4x , it features a Spherical Aberration control ring to adjust bokeh to enhance the photograph with a flattering soft focus effect , making it an ideal lens for portraiture . Integrated Dual Nano USM motors achieve smooth and accurate AF with minimal operational noise . The lens is designed to suppress focus breathing , delivering consistency across video and stills .