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Thread Starter 
I just bought a Yamakasi Q270. When I view a white background, the screen automatically brightens up. Then when I view something with a dark background, the monitor dims its brightness.

Best example is viewing Facebook. When on the news feed, it's a bright white background and my monitor will brighten up. Then when I click on a picture, the picture pops up in the middle of the screen while the rest of the screen is a bit darker.

When I click a picture, and it pops up in the middle of my screen...the brightness of my monitor dims.
When I close the picture and get back to the news monitor brightens up.

Does anyone know why it does this and how to disable it?