Definitions for "CAMERA SHAKE"
Slight movement of the camera when the exposure is being made.
This is a foremost cause of un-sharp pictures, especially with long focus lenses. It is due to movement of camera caused by unsteady hold or support, vibration, etc., leading, particularly at slower shutter speeds, to a blurred image on the film.
Movement of the camera due to improper camera support. It will often produce out of focus pictures or pictures containing motion blur.