Ask Matthew...
Our resident Nikon expert Matthew Richards answers your questions and solves your problems. If you have a Nikon-related question, email it to mail@nphotomag.com
Q The ‘back button’ autofocus isn’t working on my D7500 and the viewfinder shows AE-L instead of focus indication. The word ‘FLICKER’ also sometimes flashes in bottom right-hand corner.
Brian Rankin
A The AE-L/AF-L ‘back button’ on the D7500 – as well as a number of other Nikon cameras – locks the auto-exposure and autofocus settings by default. You’ll need to change its function in the Controls section of the Custom Settings Menu. Scroll down to position ‘f1’ Custom Controls Assignment and you can change the functions of various controls. These include swapping the action of the AE-L/ AF-L button to AF-ON. AF should now be activated by pressing the back button.