The Nikon AF Fine-tune e-Guide

The Nikon AF Fine-tune e-Guide

by Arthur Morris/BIRDS AS ART and Patrick Sparkman

There is lots of misinformation out there on the Nikon Automatic AF Fine-tune feature. Much of that involves vast over-simplifications. Patrick Sparkman and I developed a way of using the Automatic Fine-tune feature effectively with the D5, D500, the D7500, and the D850. Patrick, however, was on a roll and perfected a method for using the Focus Peaking feature available only on the D850 to quickly and accurately micro-adjust all lenses and TC-Es with your D-850. If you own a D850 you should be using D850 Focus Peaking AF Fine-tune rather than Nikon Automatic AF Fine-tune. It is faster and easier and more accurate. While there is some halfway decent info online with regards to Nikon Automatic Fine-tune feature, I have never seen a word about using the amazing D850 Focus Peaking capabilities to determine an accurate AF Fine-tune value. You can thank Patrick Sparkman for rectifying that situation.

With both Nikon Automatic AF Fine-tune and D850 Focus Peaking AF Fine-tune, the use of a LensAlign Mark II unit is recommended as best by far for accurate results and thus, this guide is written reflecting that. Taping a sheet of newsprint on a wall or using the FoCal kit does not assure you of the True Parallel Alignment (TPA) that is guaranteed when you set up your LensAlign properly. Without TPA your results will be off anywhere from a little to a lot. You can purchase the LensAlign Mark II alone here. Or you can purchase the LensAlign/FocusTune combo here. If you do not own either of those we suggest that you decide which to purchase after reading this guide through once. That said, we recommend the LensAlign/FocusTune combo for reasons that will become obvious as you make your way though the guide.

Do understand that much of the set-up information included in the Nikon AF Fine-tune e-Guide is by necessity a duplication of information included in The LensAlign/FocusTune Micro-Adjusting Tutorial e-Guide.

NOTE: This guide is sent out manually, so it will be sent to your email on the same or next business day.