3
3. Installing the AC-380 Focus knob
Before installing the fine ratio geared knob to the focus rail make sure
you have the AC-380 which is indicated by a white dot on the barrel of
the knob.
IMPORTANT!
Position the AC-380 in front of the Actus rear
standard hole with the half closed housing facing upwards. (see the
figure below) To install the AC-380 push the knob in the rear standard
hole while slightly rotating it a few degrees back and forth. Push in the
knob until the barrel of the AC-380 reaches the Actus housing.
AC-380
AC-381
