# Parameter `CamAgc` **Auto-Gain-Control** - When **true**, the camera attempts to automatically control the sensor gain, up to the value in the **CamGainceiling** property. - When **false**, the **CamAgcGain** setting is used instead. Default Value: `true` See [here](../datasheets/Camera.ov2640_ds_1.8_.pdf) for the ov2640 camera datasheet.
See [here](../datasheets/OV5640_datasheet.pdf) for the ov5640 camera datasheet. !!! 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!