I'm lens shopping again and wondering if someone might have some input here. I always thought macro lenses were more for...well, really up close stuff like insects or the veining on leaves or what have you. Well I've been looking at various lenses, and seeing that some people use macro lenses for pets, portraits, etc. What kind of difference is there between the two? I have a Sony A390. Currently have the kit 18-55, a 55-200 F/4.0-5.6, and a 50mm F/1.8. I mostly use it for the animals, but sometimes for family events/some landscape or creative shots. I do wish I could get better shots of my fish/fish tanks. Any other suggestions?