| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter detachable mechanism having an adapter frame attached beforehand having a filter attachment unit fitting to a filter detachable mechanism on a foremost unit of a lens barrel of a digital camera and capable of simply and easily exchanging and attaching a filter frame holding various filter lenses to the adapter frame.SOLUTION: An adapter frame including a male screw unit screwed to a female screw provided on the inner diameter side of a foremost unit of the lens barrel of a camera includes a filter attachment unit on light incident side, the adapter frame is attached beforehand on an inner diameter side of the foremost unit of the lens barrel, various filter frames are capable of being attached to the lens barrel side through the adapter frame, and the various filter frames are capable of being attached to the adapter frames regardless of front or back and the detachable filter attachment unit is formed on both sides of the filter frame. |
