AUTOMATICALLY FOCUSING CAMERA.

摘要

The automatically focusing camera performs the automatically focusing operation in such a manner that high-frequency component levels of image signals obtained from an imaging element are detected as focus evaluation values at predetermined intervals. For this purpose, the focusing lens is moved in relatively coarse steps over a range from infinity to a near Oint in Order to obtain focus evaluation values for each Of the steps. According to a first method, the focusing lens is moved near a distance corresponding to a maximum focus evaluation value obtained by the search device, and the focusing lens is then moved in fine steps in order to obtain a true maximum focus evaluation value. According to a second method, a true maximum focus evaluation value is obtained from an interpolated focus evaluation value obtained by interpolating the focus evaluation values that are neighbouring to each other near the maximum focus evaluation value obtained by the search device.