Final Version! Should work!
The Raspbery Pi Cam V2 seems to have some issues with the focus.
Smart solution:
Enhance Your cam!
The tiny wrench can be used to adjust the lens for better pictures.
This is the professional version,- made of steel.
Made 3 different shapes,- one of them should fit.
BIG 3D preview:
https://www.shapeways.com/model/3dtools/4714052/1/23?key=3a48a42ec41cac466759384047538c45
Other designs & sizes on request.
BETA VERSION!