Rotate the Shutter Barrel

The barrel rotation knob (C) is located directly behind the shutters on the underside of the reflector housing.

1. Loosen, but do not remove the barrel rotation knob.
2. Rotate the shutter barrel to the desired position (up to 25° in either direction from the centered position).
3. Tighten the barrel rotation knob to lock the shutter barrel in place.