Can someone explain why there are two same photogrammetry majors? What is the difference?

Digital photography: The biggest difference between digital photogrammetry and analog and analytical photogrammetry is that the original data it processes are digital images or digitized images, and it will eventually replace human stereoscopic observation with computer vision, so the instruments it uses will only be general-purpose computers and their corresponding external devices; Its products are in digital form, and traditional products are only analog outputs of digital products.