One of the nice thing about the new Fujifilm cameras is that you can control the size of the autofocus box.

The size of the focus box, which is set with the wheel, controls the size of the area where the camera is targeting for focusing.

I control the location of the autofocus box with the joystick. Before, on my X-T10, sometimes I was using the D-pad but most of the times, I was using the center and recomposing. The joystick is so much more flexible and convenient.

  • You can control the size of the autofocus box only in Single AF.
  • You can’t control the size of the autofocus box in Wide AF.
  • You can’t control the size of the autofocus box in Zone AF.
  • You can’t control the size of the autofocus box in Face Detect mode.

Ideally, it should be as small as possible to be the most accurate as possible, but it should be as big as necessary to allow for the focusing on the subject.

Here are my personal settings. They work for me, because that’s the way I think.

  • Portraits and people: 2 clicks up from the smallest size. This is what I use 98% when I’m in single AF.
  • Landscape and scenery: 4 clicks up from the smallest size.
  • Phase Detect: PDAF, need contrasty vertical edges for focusing with higher light levels than Contrast Detect: It needs EV4, EV5 and up.
  • Contrast Detect: CDAF, need some contrasty vertical edges for focusing, even at lower light levels. If there is enough contrast, it will focus with light levels as low as EV1.