If you want to get your AF Fine Tune in roughly the right area without a computer handy, the D500’s auto AF Fine Tune is great. The need for absolute perfect focus before calibrating introduces a large amount of variability to the results and the lack of consideration for the overall autofocus system (mechanical, optical and electronic together) leads to suboptimal choices by the camera. In reality, however, the need to manually repeat calibrations to iron out variability in results extends the time taken. On the surface, the D500’s automatic AF Fine Tune system does a fair job of quickly calibrating the autofocus system. There’s a fair amount of detail in this blog post, so I wanted to give a summary of the initial findings.
