Patent ID: 7932926

Claim:
A shooting lens for forming an image of a subject on an imaging plane of a camera, the shooting lens comprising: a vibration reduction mechanism which reduces a vibration of the image of the subject; a vibration detecting part which detects a vibration of the camera and outputs a vibration detection signal; a reference signal generating part which extracts low frequency components from the vibration detection signal and estimates a reference signal of the vibration detection part in accordance with the extracted low frequency components, the estimated reference signal varying due to an external disturbance and representing an output of the vibration detecting part while the camera is in a stationary state and free of vibration; a target drive position calculating part which obtains a vibration component from a difference between the vibration detection signal and the estimated reference signal, and obtains, in accordance with the vibration component, a target position to which the vibration reduction mechanism is driven, the vibration component causing the vibration of the image; a position detecting part which detects a position of the vibration reduction mechanism; and a driving part which controls the vibration reduction mechanism to follow the target position in accordance with a difference between the position detected by the position detecting part and the target position, wherein the reference signal generating part acquires information on a motion signal obtained by analyzing an image shot with the camera, converts a scale of the motion signal into a scale of the estimated reference signal and subtracts the converted motion signal from the reference signal to correct the estimated reference signal.