From the latest manufacturer Canon L-series lenses is his first half telephoto macro lens in the Canon Image Stabilization demanding. With high-quality optics available, combined with near-silent focusing ultrasound and life-size close-up capacity without an adapter, the EF 100mm f/2.8 L IS USM is simply incomparable. MTF, focal length and light intensity chartLens Specifications: 100mm 1:2.8 Lens Construction: 15 elements in 12 groups of UD glass: 1 Diagonal