Description An incredibly intelligent Arca-type quick release clamp, Q-Base finally makes the preferred system for nature, macro & action shooters a one-handed affair. Placing the camera or lens into the clamp results in a positive snap, eliminating the risk associated with tightening the normal Arca-type vise. Your gear is incapable of falling, and fore & aft travel within the clamp is possible until the knurled external ring is twisted. This is quite beneficial for macro shooters, as it acts as a secure focusing rail. As exquisitely finished as one would expect from Novoflex.