| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that when photographing conditions such as a zoom position, a focus position and an F-value are changed, a blur amount obtained in electric drive for a macro lens group is changed. SOLUTION: A zoom lens device including a relay lens group fixed to vary power includes: a blur amount setting means setting the blur amount generated by the movement of a macro lens group being a part of the relay lens group; a control data calculation means calculating control data for controlling the drive of the macro lens group, based on the set blur amount and the state of an iris; and a macro driving means driving the macro lens group, based on the control data. COPYRIGHT: (C)2011,JPO&INPIT
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