Patent ID: 8380059

Claim:
A focus adjusting apparatus comprising: a focus operating unit for generating a focus command signal for driving a focus lens according to an operating amount of the focus operating unit; a focus driving unit for driving the focus lens in response to the focus command signal from the focus operating unit; a focus position detecting unit for detecting a position of the focus lens; a focus detecting unit for detecting a focus information; an operation sensitivity determining unit for determining a focus operating sensitivity of the focus operating unit based on an in-focus information obtained by the focus detecting unit and the position of the focus lens where the focus operating sensitivity of the focus operating unit is defined as a ratio of a moving amount of the focus lens to an operating amount of the focus operating unit; and a unit for setting the focus operating sensitivity to a predetermined value other than 0 in a case where the focus operating sensitivity computed by the operation sensitivity determining unit is 0, wherein the focus driving unit drives the focus lens according to the focus operating sensitivity determined by the operation sensitivity determining unit.