I have a related question about distortion/focus distance. (Sorry if I'm hijacking!)
Can the lens profiles include variations by focus distance? For example, I have problems using the Adobe profile for Nikon's 14-24/2.8. In use, the profile overcorrects to a pincushion state. I usually need to back off the correction amount to ~60%, which isn't perfect.
Is it even feasible to create a profile for a superwide at a far focus distance? Seems like the target would be too small in the frame.
You can use different focus positions. With a wide angle you are going to need a very big chart though. You don't have to use the Adobe supplied shooting charts - you can make your own if you need different sizes/grid sizes.