I didn’t mean to do this, and it’s presumably unpredictable how it might work out. What I was really meaning to do was ask Lightroom to merge a couple of exposures, one for the highlights, one for the shadows, to produce a single image with good, complete dynamic range. “Photo Merge HDR” and “Photo Merge Panorama” are right next to each other, and this time my mouse control must have let me down and I selected the Panorama when I needed HDR. Lightroom didn’t want to complain or suggest it knew better than me, so it went right ahead and did its job. Pretty interesting, But like I said, probably unpredictable, so you can’t go out photographing with that as the plan.