My setup for adjusting autofocus.
Nikon’s How To Fine Tune Autofocus Article is pretty straight forward. I replaced the book with a focus chart and glued a ruler on a small carpenter’s square to make setting it at 45 degrees easy.
On my Nikon D800, all six of my lenses needed between +5 and +12 adjustment. I had noticed some back focus before making the adjustments. Focus is especially critical when shooting with the D800.