Samsung NX1000 User Manual page 49

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.
Rotate the mode dial to p, A, S, or M.
Press [i-Function] on the lens to select a setting.
, You can also rotate the navigation button or press
[_/AF]
to
select a setting.
!} Adjust the focus ring to select an option.
Fully press [Shutter] to capture the photo.