I recently received a D800. With talk about the left AF, I checked the accuracy of the focus points. I found I needed to fine tune two lenses between minus 14-16. At this setting the points all seem to be fine. Just curious, as I never really fine tuned before. Do most users find such a high number acceptable? Is the number likely attributable to the lens, the camera, or both? I've read reports where people were very unhappy with high fine tuning adjustments, while others did not need to adjust much. As long as it's fine tuned, I am ok, but I my concern would be to get a lens in the future and finding it needs even more- and if it was above -20. Also upon reading the manual, I saw Nikon does not recommend fine tuning, unless warranted, as it can interfere with the auto-focus accuracy. Thank you for any responses.