What it can do

As requested by torekimi...

Without the TC-E2 conversion lens.

With the TC-E2 conversion lens.

I had the camera set up on my tripod. I first set up then took a shot without the new lens. Then I added the lens, without turning off or moving the camera or changing any settings. I didn't even notice how much of a difference there was until I transferred the photos to my computer. (The LCD on the Nikon is really tiny.)