Universal's system started out as ride photos and over time they've added meet and greets and some general photographers. There are not as many general photographers as Disney has but there are some. There are normally general photographers at the entrances to the park and you can often find one at the entrance to Hogsmead. The rest of them are pretty sparse. At least they were last January. But, most of the "permanent" meet and greets have photographers: Transformers, Spiderman, Sponge Bob, etc.