I recently bought a Nikon d7200 camera and it came with a AF-F NIKKOR 18-55mm 1:3.5-5.6 GII Lens. I already own the AF-S NIKKOR 18-55mm 1:3.5-5.6 G lens......I am wondering if anybody knows what the difference is. I was hoping to sell one of the two with my old camera, but not sure which one I should keep or if I should keep both. Any insight would be helpful. Thanks!