[heliographe]

Yes, those depth maps + semantic maps are pretty fun to look at - and if you load them into a program like TouchDesigner (or Blender or Cinema 4D whatever else you want) you can make some cool little depth effects with your photos. Or you can use them for photographic processing (which is what Apple uses them for, ultimately)

As another commenter pointed out, they used to be captured only in Portrait mode, but on recent iPhones they get captured automatically pretty much whenever a subject (human or pet) is detected in the scene.

I make photography apps & tools (https://heliographe.net), and one of the tools I built, Matte Viewer, is specifically for viewing & exporting them: https://apps.apple.com/us/app/matte-viewer/id6476831058