# LCD 240x160 Brightness , contrast, and gamma wont adjust

**URL:** <https://forums.openmv.io/t/lcd-240x160-brightness-contrast-and-gamma-wont-adjust/8889>\
**Category:** OpenMV Boards\
**Created:** [October 29, 2023, 3:55pm UTC](https://forums.openmv.io/t/lcd-240x160-brightness-contrast-and-gamma-wont-adjust/8889 "2023-10-29T15:55:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ElectricVision](https://avatars.discourse-cdn.com/v4/letter/e/bcef8e/32.png) [@ElectricVision](https://forums.openmv.io/u/ElectricVision)\
**Post date:** [October 29, 2023, 3:55pm UTC](https://forums.openmv.io/t/lcd-240x160-brightness-contrast-and-gamma-wont-adjust/8889/1 "2023-10-29T15:55:06Z")

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i need to lower the brightness and wanted to adjust the contrast .  
There is a string which supposebly adjusts all 3 on one line i had tried but it did not adjust.  
Mainly needing to lower the brightness and adjust contrast .

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**Author:** ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)\
**Post date:** [October 29, 2023, 8:09pm UTC](https://forums.openmv.io/t/lcd-240x160-brightness-contrast-and-gamma-wont-adjust/8889/2 "2023-10-29T20:09:22Z")

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[https://docs.openmv.io/library/omv.image.html#image.Image.gamma](https://docs.openmv.io/library/omv.image.html#image.Image.gamma)