How to adjust the Scheimpflug adaptor in practice

Here I'm going through the process of adjusting the Scheimpflug adaptor of a camera in practice, showing the most important concepts to have in mind while performing the adjustment.

The 1-DOF adjustment has a algorithm that converges rapidly for most cases and I think most people would spontaneously come up with it while performing the adjustment in practice.

The 2-DOF adjustment is much more tricky and can be very misleading when performing the adjustment in practice. I made this video in the hopes that another poor soul would find it useful after spending hours of frustration trying to get the right Scheimpflug angle. The concept is very simple: We need to downgrade the 2-DOF problem to a 1-DOF problem. In order to achieve that, the tilt axis needs to be perpendicular to the plane formed by the normal vectors to the camera sensor and to the plane of interest.

If that is the case, then the adjustments will converge faster, but you still have to be careful that while adjusting the camera as the tilt is changed, this tilt axis might change slightly (requiring a few check iterations on the swivel angle as well).

Hope this was helpful! The full article will be available (hopefully soon) at zigunov.com ... https://www.youtube.com/watch?v=uPtby55xO_U