Have you ever notice how bright your Macs screen is?
Pretty bright. It's set like this mainly because a bright screen is a beautiful screen.
Sure, you want it to have a certain level of brightness, too dark and you can't see what your doing. But do you realize how bright your screen really is? Turn off the lights and i'd not be surprised if the screen lit up the whole room.
If your on a Macbook or Macbook Pro, the screen is a big battery drainer. You can make your computer stay alive longer by dimming the screen to a different level.
Bright screens are also not good for your eyes. Sitting all day, looking at a screen is bad enough, let alone having the screen be as bright as a lightbulb.
1. Go to System Preferences > Displays and check "Automatically adjust brightness as ambient light changes".
This will make the screen automatically adjust to the correct brightness level.
2. Download ScreenShade. It's a free application that let's you further adjust your screen brightness. Even the lowest brightness level is too bright in some places, screen shade let's you go even lower to get the perfect setting.
Your eyes will thank you and your computer will run longer.