Here's a test panorama taken with the Pentax Kx using a Samyang 8mm f/3.5 fisheye lens. The panoramic head used is a Nodal Ninja 3 MKII:

http://www.360tacticalvr.com/blog/?p=97

Nodal Ninja 3 MII Settings:
Lower Arm: 51
Upper Arm (with CP2): 96.5