that is a kit lens that prob came with your cam....it is an all-around general lens...it is not a macro though.....all of my shots up to this point were taken with an 18-55 kit lens, but i have just upgraded so i can get a little closer, and a little further away with decent clarity and focus......i am selling one of my macros.....anybody want it for 1/2 the price?
http://www.photozone.de/Reviews/282-tamron-af-90mm-f28-di-sp-macro-test-report--review
i will sell it to a fellow nerd for $200....almost brand new.....it is a Nikon mount.