This Manfrotto (Bogen) large ball-head tripod mounting has a quick-release adapter for 1/4-20 camera tripod bushings. The ball head is very large (base diameter 3.25 inches), and adds approximately 5 inches to the height of the tripod platform when the post is situated vertically. There are two motions along with two clamping levers. The upper clamp secures the ball post while the lower clamp arrests the rotaion of the upper portion of the head. It would appear to be suited to any professional 35mm camera body. When clamped there is no play whatsoever. When the ball clamp is released there is still a considerable 'drag' so the camera won't fall over on its own accord, but the ball segment may still be reoriented with ease.
This item appears not to have been used although it does not come with either the box or documentation.
Photo set 1823