WDR DAY & NIGHT COLOUR CAMERA WDR DAY & NIGHT COLOUR CAMERA-9-→ DC : DC Auto IRIS LensThis function controls the image brightness.I. Move the arrow indicator to LENS using the Up and Down buttons on the Set Up menu screen.2. Select the desired lens type by pressing the Left or Right button.3. Changing menu settings using the Left or Right button.● Available values or Status are displayed by pressing the Left or Right buttons.Press the button until desired value / status is displayed.4. After completing the setting move the arrow indicator to EXIT and press the SET button to EXIT.● Move to available submenu by moving arrow to desired feature.● Submenu is not available when this symbol is displayed ” -----”.NOTE◄┛MAIN SETUPLENSEXPOSUREWHITE BALBACKLIGHTSDNRDAY / NIGHTIMAGE ADJSPECIALEXITDCATWOFFONAUTO