http://www.instructables.com/id/String-Tripod/
quote:This is an old photographers trick - here is my design. Sometimes referred to as a string tripod or string bipod or string monopod. Also known as a chain tripod, bipod, etc... This device is used to stabilize a camera in order to get clearer pictures at a slow shutter speed. With more and more digital cameras coming out with vibration reduction or image stabilization systems, the string tripod has a new life.
Since image stabilization systems work best with rotational vibration, translational vibration can still create blurry pictures. By restraining the up-down left-right and back-front axis, you can lessen this vibration. Since with this design you still have rotational freedom, you can pan and follow something such as a bird or sports player.


