| 摘要 |
A filter adapter includes a stationary tube detachably mountable on a camera body in a state that it is externally fitted on a zoom lens barrel, a movable tube movably arranged in an optical axis direction with respect to the stationary tube and including a lens barrel pressing portion extending inwardly in a radial direction at a top end portion of the movable tube, to which an optical filter is detachably attached at an end portion of an object side of the lens barrel pressing portion, and an urging member configured to urge the movable tube toward the camera body. When the lens barrel extends to the object side, the lens barrel pressing portion is pressed against an urging force of the urging member by the top end portion of the lens barrel, the movable tube moves in an optical axis direction in conjunction with the lens barrel.
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