The EF 100mm f2.8L Macro IS USM lens could very well be the essential multipurpose lens for every camera bag due to its ability to capture sharp close-up images of small objects as well as beautiful portrait-length telephoto shots. The incorporation of Canon's Hybrid IS in this L-series macro lens allows it to compensate more effectively for camera shake during close-up shooting and marks a significant improvement for professionals and advanced amateurs utilizing macro photography for portrait, nature or wedding shoots.
Inner focusing affords a long working distance of 5.9in. (149mm) at 1x. A 3-group floating system results in excellent delineation at all focusing distances. Ring USM for silent and high-speed AF, and full-time manual focusing also provided. UD lens elements are used to correct for colour aberration and produce a high contrast image with good sharpness and definition. The EF100mm f2.8L Macro IS USM features a single UD lens to provide the highest image quality possible.
Ring-type USM (Ultra Sonic Motor)
Ring-type motors are highly efficient and feature a low power consumption to extend the camera battery life. Being ring-shaped, they are ideally suited to the shape of the lens barrel, their focusing speed is very controlled and they are stable across a wide range of temperatures, from -30°c to 60°c. They enable quick and silent auto focus of Canon Lenses.
L-series lenses meet the requirements, and needs of professionals. Canon uses three technologies in its L-series lenses to produce the sharpest, clearest pictures: fluorite elements, aspherical elements and UD optical glass elements. To make sure you can easily identify these luxury lenses, Canon marks them with a red ring around the lens barrel. If it does not have this red ring, it is not part of the L-series lens range.
Built to Last
Optical performance is only half the story. A lens destined for professional use must be able to withstand the rigours of a professional photographer’s working life. This means a rugged build quality that will endure the knocks of everyday use, and weather sealing to protect against every type of adverse conditions. Accordingly, the L-series lenses feature liberal use of rubber sealing at interface areas, such as the lens-to-camera junction, external switches, and around zoom and focus rings to prevent water getting in and destroying the lens’ electronics.
Low Light Limits
Professional photographers are often forced to shoot in less than ideal lighting conditions. Sometimes this can mean in low light or even at night. The L-series offers wider maximum apertures than other lenses.