What Does Image Stabilization Mean When Talking About Photography?

When talking about photography ‘image stabilization’ refers to a technique used within camera hardware to reduce the effects of camera shake. There are two main types of image stabilization, lens based and camera based. Lens based image stabilization uses floating lens elements which move independently of the lens barrel to reduce the effects shake. Camera based image stabilization allows the image sensor to move independently to the camera body to mimimize unwanted sensor movement. Image stabilization is extremely helpful in any situations which require longer exposure times, for example when hand holding a camera in low light conditions, or when maximizing depth of field by using narrow apertures.