Arca-SwissLast year I bought a Gitzo GH2780QR [1] ballhead with an additional (medium) lens plate for my 70-200mm f/2.8 lens. The concept of this ballhead was/is ingenious. By using the big knob/dial you could change the friction on the ball. This enables you to pan/rotate the camera and lens very fluently, and when you applied enough friction, you could let go of your camera, and it would not move or fall down, and you'd still be able to pan/rotate the camera. All in all very safe and handy.

But there were some things that annoyed me;