Patent ID: 8422880

Claim:
A filter adapter configured to be mounted on a camera body including a zoom lens barrel, the filter adapter comprising: a stationary tube including a mounting portion configured to be detachably mounted on the camera body; a movable tube configured to be movably arranged in an optical axis direction with respect to the stationary tube, the movable tube including a lens barrel pressing portion extending inwardly in a radial direction at a top end portion of the movable tube and an attachment portion to which an optical filter is detachably mounted on an end portion of an object side of the lens barrel pressing portion; and an urging member positioned between the stationary tube and the movable tube and configured to urge the movable tube toward the stationary tube; wherein the filter adapter is mounted on the camera body such that the stationary tube covers the zoom lens barrel and, when the zoom lens barrel is extended to the object side, the lens barrel pressing portion presses a top end portion of the zoom lens barrel according to an urging force of the urging member, so that the movable tube moves in an optical axis direction in conjunction with the zoom lens barrel and a length of the filter adapter in an axis direction changes.