# Parameter `CamAgcGain` **Auto-Gain-Control-Value** Range (`0` .. `30`) Default Value: `15` 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! !!! Note This is used when **CamAgc** is off. !!! Note Access the gain level of the sensor, higher values produce brighter images.