No longer a newbie, moving up!
I have the Nikon D90, with the 70-300mm and 28-80mm lenses. I really like macro photography, and I would like to get as close as possible to achieving this with my current lenses as macro lenses are a tad out of my budget right now. I know they have filters that can do this, how do they work? Anything else that can get closer to Macro without actually owning the Macro lens?