Mr. Merklinger writes in "Focusing the view camera", S. 6, about Scheimpflug rules:
Given J as "the height of the lens above the [intended] plane of sharp focus" and f as the focal length of the lens, then the inclination angle α of the lens is "α = arcsin (f/J)".
With a clinometer (e.g. a compass like the Recta DS 50G, Suunto PM 5 or a smartphone app) held on the front of the lensboard you can tilt to achieve the desired angle.
Then you increase DOF by changing the aperture diaphragm.
Merklingers figures show an axial tilt, eg. figure 5 and figure 23.
I think it could be difficult to mesure the height of the lens above the intended plane of sharp focus. Of course, you can make a drawing. Then you will have to mesure every distance. This is really a lot to do.
As a standard situation to avoid too much measuring you can make a proposition that this height J should be the height of the lens above the bottom on which your tripod stands.
This means that your plane of sharp focus begins right under your lens.
But this also means that you will have to tilt perhaps more than you initially intended. This means that perhaps you will lose far away details out of sight, excluding them from the picture.
It depends on the height of your tripod, too.
Another problem is the image circle. I think you will have to lower the front standard. Perhaps a base tilt could help.
But: you would be able to indicate the presumed "ideal" angle of front standard inclination on the lensboard then ...
Regards
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