I'm trying to make some math to verify exactly how parallel front and rear standards need to be to still not give visible focusing errors for a certain aperture/coc.
Ie I'd like to mathematically answer questions like "if there is an accidental swing/tilt of 0.05 degrees, will that be visible when focusing at infinity at f/11". As I evaluate different view cameras now and then it's a question I often have but I have no real good tool to answer it.
I've tried to use the normal Scheimpflug formulas with very small angles, but that does not seem to work. Using them it actually seems to be better to have a little error than absolute parallelism :-)
Someone that knows where I can find some math for this?