Samsung NX20 - Using I-Function in PASM Modes

My Camera > Shooting modes
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Using i-Function in PASM modes
When you use the i-Function button on an i-Function lens, you can
manually select and adjust shutter speed, aperture value, exposure
value, ISO sensitivity, and White Balance on the lens.
1
Rotate the mode dial to P, A, S, or M.
2
Press [i-Function] on the lens to select a setting.
• You can also rotate the navigation button or press [C/F] to
select a setting.
Auto
3
Adjust the focus ring to select an option.
• You can also scroll the jog dial to select an option.
Auto
4
Fully press [Shutter] to capture the photo.