POWER O.I.S. is about twice as effective as MEGA O.I.S. at reducing low-frequency vibration-caused blur when pressing the shutter button or shooting with a slow shutter speed. So you can take beautiful night shots without blurring. Activating POWER O.I.S., Intelligent ISO Control, Face Detection AF/AE with Face Recognition, Intelligent Scene Selector, Intelligent Exposure and AF Tracking, the camera does all the work in the iA Mode. Face Recognition function recognizes registered persons' faces and optimizes the focus and exposure settings.