How to set the contrast of the screen of the iMac?

Bought a new light to the office where I have the iMac 27 ". Unfortunately, the light produced by this new device shines more directly on the screen of the iMac, does the old light. Thus, when the light is on, the iMac adjusts the contrast of the screen so that the display appears quite washed out. When I turn on the light, the iMac readjusts the contrast to normal. (No, I can't adjust the position of the device, it is mounted directly on the desktop in the only possible way.)

This seems to be an automatic adjustment of the iMac. At least, I can't find any sort of manual for setting the contrast. Is it possible to do so. Create a new color profile? Another tool?

Thank you!

Steve,

You have a "automatically adjusts brightness" setting in system preferences > displays > display...?

Automatically adjust the brightness or Ambient light compensation (depending on your screen)

If your Mac has detection of ambient light, you can have the brightness of the screen automatically adjust according to the current light conditions.

Tags: Mac

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