| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens controller capable of keeping the angle of view constant even when the lens is controlled to be focused at the end point of the driving tolerance (light quantity maintaining range) of zoom by an F-value priority function. SOLUTION: In a zoom lens provided with a light quantity setting means 19 variably setting the passing light quantity of an optical system including a zoom part Z and a focus part F, and a control means 4 controlling the driving of the zoom part; the control means restricts the driving range of the zoom part to the light quantity maintaining range where the real passing light quantity of the optical system is not lowered from the set passing light quantity by the light quantity setting means by driving the zoom part, and also the control of the driving for correcting the fluctuation of the angle of view of the zoom part associated with the driving of the focus part in a state where the driving range for the zooming of the zoom part is restricted to the light quantity maintaining range is performed regardless of the light quantity maintaining range. |
