Canon EF 400mm f/2.8L IS III USM EF400mm f/2.8L IS III USM Instructions - Page 17

9. Image Stabilizer Image stabilization corrects vibrations that occurs with hand-held shots. Image stabilizer switch Image stabilizer mode selector switch Camera shutter button Set the STABILIZER switch to ON. OOIf you are not going to use image stabilization, set the image stabilizer switch to OFF. Select an Image Stabilizer mode according to the application and shooting conditions. Press the shutter button down halfway. Once you have a stable image, press down all the way to take the picture.* * Only MODE 3 does not allow you to check the effect gained from stabilization. Image Stabilizer modes OOMODE 1: Corrects vibrations in all directions. It is suited to shooting still subjects. OOMODE 2: When you take a panning shot either horizontally or vertically, corrects vibrations at right angles to the direction of panning. It is suited to shooting moving subjects. OOMODE 3: During exposure, corrects vibrations in the same way as MODE 2. Since vibration is corrected only during exposure, It is suited to shooting irregularly moving subjects. ENG-16