Yes, I was going to chime in at the beginning, but I had a scheduled Zoom meeting to go to. I have lots to say, but it’ll take a little while for a complete explanation. I’m supposed to be prepping a presentation on all this for 3D Basecamp, and now who knows what’s up with that, but I’m still determined to find a platform to deliver at least some of it either way.
The quick answer is this; I believe the engineers who created the Match Photo tool simplified the problem for themselves by making some assumptions and reducing the problem at hand to certain special cases, namely two and three point perspective, but not one point perspectives. They also assumed that the photograph is a natural, un-doctored photograph obeying some simple rules of optics. I’ll bet you can crop a picture so long as the center of the cropped version is the same as center of the original image, because that would be the same as using a different lens or camera. 4x5 and other view cameras can do “perspective correction” through swings and tilts, which will mess with the assumptions behind the Match Photo engine, and that’s what creates a problem. There are PC lenses to do the same with regular, interchangeable lens cameras, and you can also achieve the same effect in software. If you didn’t take the picture, you can never be sure what was done with it.