Hi Richard,

I think you have the right idea, though I think depending on your needs, I wonder if it make more sense to pre-define your field of view in the Field Data Editor and use a script to loop over object distances. I mention this because we actually have another forum thread here that seems to overlap a great deal with your topic.

In short, while you could potentially use the Footprint Diagram to retrieve spot locations, using the Grid Distortion or the Field Curvature/Distortion analyses might also get you the data you'd like a bit more directly. If you have Object Height points in your Field Data Editor already, then the analyses will report distortion information based on those definitions. You could then retrive different distortion data as you scan the object thickness value as needed.

Let us know how these thoughts work out for you, and thanks for posting on the forums here!

~ Angel