I shoot with a Nikon D800 DSLR body. I recently purchased a vintage Nikkor 300 mm f/2.8 ed -vr lens. I've never attempted to use a vintage lens on this camera body. How do I go about using this lens to shoot at full frame on my Nikon D800? Do I need to get a lens adapter and if so, can someone tell me what adapter will work for my needs?