Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:275087.

New version https://www.thingiverse.com/thing:2810603 Lens holder for tripot easy panorama maker with perfect nodal point fix. Wil work with sigma lens 8mm 3.5 (new hole 4.5).
Information:
Nodal point is golden circle on the lens.
Lens tilt 2 degree up to avoid a top hole in the panorama.
Lens clamp should be on the border of the focus ring.
Advantage to other solutions:
Light.
Easy to disassemble.
Lens tilt position 2 degree up.
Nodal point position fixed.
Fits with internal screw op a standard Manfroto plate.
Cheap !
sketchupfile included.