What to do when the Samsung Monitor screen is not bright enough?

Some monitors have Ambient Light Sensor. If the ambient light level is low, then brightness could be lower than 250 nits.

If you find that the brightness is low, you can disable the ambient light detection.

•   Go to Settings > Select  General .

•   Press  Eco Saving Plus> Select Ambient Light Detection to Off.

•    Go to Settings > Picture.

•    Press Eye Saver Mode> Select Adaptive Picture to Off.

•    Go to Settings > Select Picture. 

•    Press  Expert settings > Select Brightness to 50(Max)

•    Go to Settings > Select Picture.

•    Press Expert settings > Select Color Tone to Standard