# Parameter `CamAec`
Default Value: `true`
    
!!! Warning
    This is an **Expert Parameter**! Only change it if you understand what it does!

	After changing this parameter you need to update your reference image and alignment markers!
      
!!! Note
    This parameter can also be set on the Reference Image configuration page!

**Auto-Exposure Control**

When **true**, the camera attempts to automatically control the exposure.
 
When **false**, the **CamAecValue** setting is used instead.