Hi there. I'm TOTALLY a beginner--as in my first SLR just arrived in the box. It came as part of a package that included a 55-200 mm lens (along with an 18-55 mm lens). I want to be able to take pix of insects and close up of flowers. My question is, will I need to purchase macro lenses as well? Or will the 55-200 enable me to do this? Thanks!