I think that what you want to use may be a simple lens shift
Might be easier to correct for keystoning using a lens stage vertical shift instead of Scheimpflug.
All you need to do is draw an imaginary line from the center of your screen to your light source and then ensure that all of your components are centered on the same line but parallel with each other. This is used heavily in the aforementioned large format view camera to shoot architecture so that the buildings don't 'keystone' toward the top.
Ever take your 35mm SLR camera, point it up at a building, take a picture, and have the building 'keystone', i.e. get much smaller at the top than at the bottom? Using a wide angle lens on that same 35mm point the camera directly at the base of the building but step back far enough so that you can see the top of the building in the viewfinder (but still pointing at the base of the building). The keystoning is gone as long as your film, lens, building are all parallel to each other. In a view camera what you do is make everything parallel with each other but then you have the ability to slide the lens up so that it is in effect pointing up, but without tilting it.
See pic, might help clarify...
Might be easier to correct for keystoning using a lens stage vertical shift instead of Scheimpflug.
All you need to do is draw an imaginary line from the center of your screen to your light source and then ensure that all of your components are centered on the same line but parallel with each other. This is used heavily in the aforementioned large format view camera to shoot architecture so that the buildings don't 'keystone' toward the top.
Ever take your 35mm SLR camera, point it up at a building, take a picture, and have the building 'keystone', i.e. get much smaller at the top than at the bottom? Using a wide angle lens on that same 35mm point the camera directly at the base of the building but step back far enough so that you can see the top of the building in the viewfinder (but still pointing at the base of the building). The keystoning is gone as long as your film, lens, building are all parallel to each other. In a view camera what you do is make everything parallel with each other but then you have the ability to slide the lens up so that it is in effect pointing up, but without tilting it.
See pic, might help clarify...
