Some current dome cameras have a button on the cable which can adjust some image settings.
Toggle button functionality:
Quick Press and Release: Enter the toggle menu interface.
Press In and Hold: Go back to previous page.
Press Left: Scroll left within the menu options.
Press Right: Scroll right within the menu options.
Press Up: Scroll up within the menu interface.
Press Down: Scroll down in the menu interface.
Toggle Menu Options:
Manual: changes camera lens focus to manual control
Auto: automatically focuses camera lens
2.Shutter/AGC(Automatic Gain Control)
Manual: amplification/gain process managed manually by user
Auto: controls amplification/gain process automatically if the scene illumination falls under a usable level.
3.White Bal (White Balance)
Push (indicates that user 1, user 2, etc can be pressed to change personal user settings)
Anti CR (anti-color rolling)
ATW: Auto Tracing White Balance
BLC (Black light compensation)
HLC (Highlight compensation)
Mirror (inverts the camera image on screen)
HUE (controls image color saturation level)
6.ATR (brightness enhancement)
Monitor area: selects the depth of field for motion detection
Area Sel. (Area Selection)
-1/4, 2/4, 3/4, 4/4
On (press and hold to set name)
14.Camera Reset: restores default settings for camera