I ask this question because I'm working on a project and fear reinventing the wheel or making an inferior method of something that can be done easier and the knowledge publicly available.
This is my setup:
https://i.imgur.com/6iwGXOl.jpg
Center of the lens on the right side does some pincushion distortion before the beam reaches the other lens. I need to be able to change where the center of distortion over time mechanically.
Right now I plan to use stepper motors.
But I think there are similar methods although used for a different purpose in both the photography world and video projector world.
For photography there are tilt-shift lenses.
For video projectors there is lens shift.
With lens shift I get perfect, undistorted video projected up to 100% above, below, left or right from center of the lens.
How are both of these done? Is it similar to my current setup, or use something else such as tilting fresnel lenses?
Should I stick with my current setup for offsetting the center of distortion or are there better ideas?
I apologise in advance for poor topic title. Was originally "how do tilt-shift DSLR lenses and video projector lens shift work? And am I trying to reivnet the wheel?" but didn't fit character limit.