Great link...!
CS/PS can be written into it by equaling the % of vertical distortion correction to the same angle % to the height required to be increased . So any mathematicians out there wanting to have a crack at it?
Compensating for the loss in height is not the problem...
In an oblique corner shot of he exterior of an building the perspective looks OK if you keep the verticals vertical (or compensate).
You can take a picture so that the front (external) wall of a building looks rectangular by keeping your sensor parallel to that wall, so you get perspective (only) in the sided wall... similarly, in this picture, keeping your sensor parallel to the far end wall would make that wall rectangular, and more importantly, it would make the bay-roof arches look symmetrical and not distorted.
