Amongst the fanfare of abilities like 10fps shooting, and ISO performance never before seen in a crop body, one little mentioned feature of both the Nikon D500 and D5 is the Automatic AF Fine Tune feature.
This single understated feature could mean an end to back and front focusing issues that have plagued photographers for years.
While camera & lens manufacturers do the very best they can to calibrate their lenses during their creation, manufacturing tolerances mean that one sample may be slightly more out than another. This is where AF fine tuning steps in.
Many photographers were very happy when DSLR manufacturers started giving us the ability to fine tune our autofocus systems with individual lenses, to eliminate back & front focusing problems, but many still don’t know exactly how to use this feature, and even for those that do, it can be a cumbersome task.
It can also be troublesome if you have zoom lenses that focus perfectly fine at one end of their focal length range, but are slightly off at the other.
Obviously you can only pick one focal length to calibrate a lens from, so you generally would pick one end or the other, or compromise in the middle and have both extremes suffer slightly.
Even some prime lenses could potentially suffer. A lens may focus perfectly fine up close, but be out when focusing at a greater distance, or vice versa. Often, photographers just put it down to the AF point missing its target and giving the shot another go, yielding the same result.
Both of these situations mean, of course, that you aren’t always able to fully utilise your expensive lenses throughout their entire focal & focus range quickly and easily.
Nikon’s new D5 and D500 bodies aim to solve this problem by making AF fine tuning a much more speedy and efficient process, allowing you to recalibrate your lenses on the fly, as and when you need to.
In this short video from DPReview, we see Sam demonstrate exactly how this feature works.
Being able to calibrate your lens with just a few button pushes in under a minute will certainly make life much easier for photographers on location, working at a range of focal lengths and focus distances.
While the issues mentioned above regarding lenses being out at different focal lengths or focus distances but spot on for other parts of their range will still be an issue with Nikon, correcting for this at a moment’s notice has become a complete breeze.
Hopefully, in the future, Nikon will allow you to store multiple points for lenses at various focal lengths in their zoom range and at different focus distances, automatically correcting as it goes to fill the gaps in between.
But for now, we’re not going to complain.
Have you calibrated your DSLR autofocus system with your lenses to help ensure you get perfect focus every time? Have you not done it because you just don’t know how and it just looks too complicated? Let us know in the comments.