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.