First shot taken (cropped) with the old 85mm 1.8 AF (pre-D) lens which I love for it's small size that I sometimes fit in my front pocket when I don't want to bring my bag. The AF capabilities of the D750 are indeed better than the D600, but not too noticeably to me. I thought I would get almost 100% keepers, but I find that it's maybe 20% better than the D600. Much appreciated, however.