Image stabilization systems, specifically In-Body Image Stabilization (IBIS) units found in Canon cameras, can exhibit movement when the camera is powered off. This slight movement or “play” is due to the floating nature of the sensor when it’s not actively being stabilized by the system’s electromagnets. A demonstration of this can be observed by gently shaking a compatible Canon camera while it is turned off; the sensor unit within may rattle or shift slightly.
The functionality of IBIS provides significant advantages in photography and videography. It minimizes the effects of camera shake, enabling sharper images at slower shutter speeds and steadier video footage. Historically, image stabilization was lens-based, requiring each lens to have its own stabilization mechanism. IBIS offers a more versatile solution, stabilizing any lens attached to the camera body, including vintage or adapted lenses. This leads to cost savings and increased flexibility for photographers and videographers.
