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Found on select Canon lenses and excellently suited for brilliantly sharp sports photography, Optical Image Stabilizer Mode 3 enhances Optical Image Stabilizer Mode 2 by functioning only when the shutter release is fully pressed. By remaining inactive until exposure, Mode 3 stabilization control allows for easy panning. Additionally, Mode 3 compensates shake in a direction perpendicular to the direction of panning when panning is detected and gives the equivalent effect of a shutter speed four stops faster.