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The iMac keyboard has brightness keys - on the current model on the F1 and F2 keys. The screen can be calibrated by selecting Displays within System Preferences, then clicking the Color button and the Calibrate... button. This will talk you through the screen calibration.

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14y ago
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11y ago

If you have a Mac keyboard the F2 button brightens the screen. If you do not have a Mac keyboard click System Preferences > Display > Display Tab and slide the brightness slider all the way to the right.

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11y ago

On your Apple keyboard press F2 to brighten the screen, F1 to darken the screen. If you do not have an Apple keyboard open System Preferences > Display and slide the brightness slider all the way to the right.

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10y ago

Most Apple computers have a small key at the top of the keyboard that has a symbol like a little sun on it. Pressing this and the key next to it brighten or darken the screen.

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Q: How do you brighten screen on an iMac?
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