For many photographers, tweaking or just using manual focus with AF lenses is a normal thing.
But, if you don’t set the camera properly, once you manually focus, a 1/2 press on the shutter wipes it all out.
you must do 3 things to set the camera up so your shutter 1/2 press won’t activate AF.
- Change the “AEL/AFL” to Mode 3 (Menu/Gears/A/AEL/AFL/OK/S-AF/>Mode 3/OK)
- Make Fn1 to be your AF Button (Menu/Gears/B/OK/Button Functions/>/Fn1/>/”AEL/AFL”/OK)
- Change the AF Mode to “S-AF+MF” (Menu/Gears/A/AF Mode/OK/S-AF/>/”S-AF+MF”/OK)
This will allow you to manually focus with the wired focus ring, and use the shutter button to take a meter reading and exposure. without the 1/2 press changing the manual focus you set.