This is the SLR Magic 12mm T1.6 lens on the GH2 with a Lanparte adjustable gear belt and the Fifty Dollar Follow Focus w/ gear attachment. Testing functionality, which works fine. Gears might slip on fast focus pulls.
Rails by Fotga, which I had to rework to attach a Manfrotto quick release, basically using bottom plate as top plate.
Enjoy and hope this helps in some way for you.