This week I’ll show you how to set up back button focus on your A7iii. If you want more control over your camera, this is one way to do this. I like to have complete control to take better photos, so I split up the task of the shutter button. THis will mean that your shutter button will take the photo, and your thumb will focus when you need to….almost like a semi automatic mode for focus. If your focus isnt changing from shot to shot…you can focus once and leave it….if you want to track focus, just keep your thumb on the button in constant focus. 

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