Patent ID: 8023035

Claim:
An auto-focusing apparatus, comprising: a first-signal generation unit generating a first image signal from an object light-flux reflecting an object; an evaluation-value generation unit generating an AF evaluation value indicating a sharpness of an image from the image signal; a control unit controlling a focus lens adjusting the position of a focal point of the object light-flux so that AF evaluation value becomes relatively large; a second-signal generation unit able to generate an image signal corresponding to a first recording format and another image signal corresponding to a second recording format having lower-resolution than the first recording format from the first image signal; a transfer switch for switching the recording mode to the first recording format or the second recording format; and a modification unit lessening a move quantity of the focus lens per unit time independent of a direction in which the focus lens is moving, and generating a sharper characteristic shape of the AF evaluation value compared to the second recording format, in a case where the recording format is switched to the first recording format.