Patent ID: 6577343
Filing Date: 2003-06-10
Classification: H04N

Abstract:
An image pickup apparatus comprising:a first lens group for performing a magnification varying operation; a second lens group for correcting a movement of a focal plane during a movement of said first lens group; driving device adapted to respectively drive said first lens group and said second lens group; storage device adapted to store, according to a subject distance, an in-focus position of said second lens group relative to a position of said first lens group; predicting device adapted to predict a destination position to be reached by said first lens group after a predetermined time according to a moving speed of said first lens group, during the magnification varying operation; and control device adapted to compute an in-focus position of said second lens group corresponding to the destination position of said first lens group and a moving speed of said first lens group, and controlling said driving device to drive said second lens group at the moving speed so as to reach an in-focus position after the predetermined time.