We had a very curt guide who ushered us fairly quickly through the canyon. She tried giving photo instructions too, but as a freelance photographer, I can tell you her guidance was wrong. She was short with her guests, and didn't tolerate any nonsense.
If you want to go for some beautiful photos, you really should be on the longer photo tour (2.5 hrs) and not the normal tour (1.5 hrs). To be clear, only 30 mins of the 1.5 hrs is actually IN the canyon -- includes transport and the guide talking afterwards.
If you own or manage Antelope Canyon, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.