Cheers
I'll try to see an original print at some point, if I can.
But there are loads of photos that still have impact even when viewed at very low resolution on the internet. The guy standing in front of the tank in Tianenmen Square, Those guys eating lunch on a girder on a half-built skyscraper way above new york... The list goes on. The photo is good regardless of how you see it. With Moon and Half Dome it seems you have to see the original to fully appreciate it, which limits the audience appreciation.
But I guess it's the same with some paintings.