The Graf-Studioball is a real Ballhead for work in studios and outdoors. Absolute rock-steady support, even for heavy cameras or telephoto lenses. The ball diameter of 68mm (2.7") makes for smooth pinpoint positioning in any position. In addition, Graf-Studioball is equipped with a dual friction knob and has Independent lockable 360° panorama base. Graf-Studioball is available in two models, with or without quick release clamp.