This is the image I was concerned about when I mentioned "drift" after leveling the NN5L. It appeared to me to be "significant." But, from what I can see I did not have to be concerned. So the question is how much drift can the NN5L tolerate?
This image is comprised of 78 photos - 13 images with 3 exposures per position in two rows. It was stitched and exposure fused in PTGui.