A photo tour is a trip that is specifically designed around photography. It means that you will not only travel to the most photogenic locations, you'll also get there at the right time, with the right light. It means that time is taken at these locations so that you can wait for that perfect moment, and take that perfect shot. It means that you'll be traveling with fellow photography enthusiasts. Moreover, photo tours are guided by professional photographers who offer tutoring throughout the journey, so that you can sharpen your skills, whatever level you are as a photographer.
Similarly, photo safaris are different from regular safaris in that they're fully focused on the needs of photographers. It's all about getting you that epic wildlife shot, from the right angle, with the right background. You'll experience the wilderness from a photographic perspective, receive tutoring from a professional wildlife photographer, and can expect to end up with an impressive portfolio of pictures.