A prime lens with excellent macro capabilities The EF 100mm f/2.8L Macro IS USM has a true macro magnification ratio of 1:1, meaning the object you are photographing in real life is the same size as on your camera sensor. This versatile lens gives great results in portrait work and handheld movie-making, thanks to its ability to achieve a shallow depth of field with beautiful bokeh, along with built-in Hybrid Image Stabilization and lightweight design. - 100 millimeter focal length and 1:2.8 maximum aperture. The EF1.4X II; EF2X II extenders cannot be used with this lens. There are no compatible close-up lenses - Lens construction consists of 15 elements in 12 groups - 23.4-Degree diagonal angle of view - Inner focusing system with USM and full-time manual focus option. Closest focusing distance 0.99 feet; 0.3 meter (maximum close-up magnification: 1x) 67 millimetre filter size. Filter Size: 58 millimetre. Lens hood: ET-73 - Compatible with 67 millimeter filters - Canon's first mid-telephoto macro "L" series lens to include Canon's sophisticated Image Stabilization - Near-silent Ultrasonic focusing - Enjoy life-size close-up capabilities without an adapter