Automatic focus controlling method

摘要

In a hill-climbing method for detecting a peak of a contrast signal to detect the position to bring a taking lens to for automatic focus control, the taking lens is moved further from a first detected peak position by a predetermined distance for searching for a higher peak. When no higher peak is detected, the lens is brought to the first detected peak position. When a higher level is detected, the lens is further moved for searching another peak according to the hill-climbing method.