Compact L-series telephoto lens with an Image Stabilizer which
compensates for camera shake with the equivalent effect of a shutter
speed two stops faster. Two Image Stabilizer modes are provided:
Stabilizer Mode 1 (the same mode featured on the EF 75-300mm f/4-5.6
IS USM) and the new Stabilizer Mode 2 which steadies the image
during horizontal or vertical panning. Mode 2 detects the panning
direction automatically. The closest focusing distance is 4.9 feet
(1.5 m).
