_AF-S Micro Nikkor 105mm 1:2.8G ED
This is a macro lens that Nikon likes to call "micro". It's a big, heavy, sturdy, professional lens with Nano crystal coat. It's reasonably priced for a professional lens. It works great for portrait as well, but the subject has to be little to far from you when used with a DX camera. This produce nice bokeh if you can afford to stand far from the subject.