The rear command dial only adjusts the shutter speed in either:

  • When the shutter speed dial (on top of the X-PRO2, the X-T2, the X-T20, the X-T1, or the X-T10) is set to T, then the rear command dial will select any shutter speed.

  • When you choose a shutter speed with the shutter speed dial (on top of the X-PRO2, the X-T2, the X-T20, the X-T1, or the X-T10), using the real command dial will adjust the shutter speed by 1/3 stop increments based around your dial setting.