手动更新mac

MacBooks attempt to automatically manage your display brightness for you, dimming the display when you step away from an outlet and adjusting the brightness to suit the overall light level nearby. But you can adjust the brightness manually and even disable these features, if you like.

MacBooks会尝试自动为您管理显示屏的亮度，当您离开电源插座时，显示屏会变暗，并调整亮度以适应附近的整体亮度。 但是，您可以根据需要手动调整亮度，甚至禁用这些功能。

The brightness hotkeys on a Mac will only allow you to adjust an external display’s brightness if that external display was made by Apple. If you’re using an external monitor made by someone other than Apple, you’ll need to adjust the brightness directly on the display itself, as described later in this piece.

如果Mac上的亮度热键是由Apple制造的，则Mac上的亮度热键仅允许您调整其亮度。 如果您使用的不是Apple以外的其他人制造的外接显示器，则需要直接在显示器本身上调节亮度，如本文后面所述。

如何在Mac上手动调整亮度 (How to Adjust Brightness Manually on a Mac)

You’ll find brightness-adjusting keys on your Mac keyboard, whether you’re using a MacBook or a Mac desktop with an Apple keyboard.

无论您使用的是MacBook还是配备Apple键盘的Mac桌面，您都可以在Mac键盘上找到亮度调节键。

On a MacBook, look at the top-left corner of your keyboard. The F1 and F2 keys will decrease and increase your brightness. On a Mac desktop PC, look at the top-right corner of your keyboard. The F14 and F15 keys will do the same–look for the keys with sun logos on them. Just press the keys to decrease and increase your brightness. You’ll see an on-screen overlay appear, showing you the precise brightness level.

在MacBook上，查看键盘的左上角。 F1和F2键将减小并增加亮度。 在Mac台式机上，查看键盘的右上角。 F14和F15键将执行相同操作-查找带有太阳徽标的键。 只需按下键，即可降低和增加亮度。 您会看到一个屏幕叠加层，显示精确的亮度级别。

If these keys are set up to function as standard F-keys instead of special action keys, you’ll need to press and hold the Fn key as you tap them.

如果将这些键设置为用作标准F键而不是特殊操作键 ，则需要在按住它们的同时按住Fn键。

If you’re using a different keyboard with your Mac, you may find the brightness keys in a slightly different place, or you may not see any brightness keys at all. In this case–or if you just prefer using your mouse–you can adjust brightness in OS X, too.

如果您在Mac上使用其他键盘，则亮度键的位置可能会稍有不同，或者根本看不到任何亮度键。 在这种情况下，或者您只喜欢使用鼠标，也可以在OS X中调整亮度。

To do so, click the Apple menu and select “System Preferences.” Click the “Displays” icon in the System Preferences window and adjust the “Brightness” slider to your desired level.

为此，请单击Apple菜单，然后选择“系统偏好设置”。 单击“系统偏好设置”窗口中的“显示”图标，然后将“亮度”滑块调整到所需水平。

如何在外接显示器上手动调整亮度 (How to Adjust Brightness Manually On an External Display)

If you’re using an external display made by Apple, you may see a “Brightness” slider in the System Preferences window and be able to control the brightness of your display using the keys on your keyboard.

如果您使用的是Apple制造的外接显示器，则可能会在“系统偏好设置”窗口中看到“亮度”滑块，并能够使用键盘上的键控制显示器的亮度。

However, these keys won’t do anything and you won’t have a “Brightness” slider in the System Preferences window if you’re using an external display not made by Apple.

但是，如果您使用的不是Apple生产的外接显示器，这些键将无法执行任何操作，并且“系统偏好设置”窗口中将没有“亮度”滑块。

If you’re using a third-party display, you’ll need to adjust the brightness on the display. Look for physical buttons on the display itself, often located near the power button. You may find dedicated “brightness up” and “brightness down” buttons, or you may have to press a “menu” or “options” button and locate this option in an on-screen menu.

如果您使用的是第三方显示器，则需要调整显示器的亮度。 在显示器本身上寻找物理按钮，通常位于电源按钮附近。 您可能会找到专用的“提高亮度”和“降低亮度”按钮，或者可能必须按“菜单”或“选项”按钮并在屏幕上的菜单中找到此选项。

不插电时如何自动调暗显示器 (How to Automatically Dim the Display When You’re Not Plugged In)

Your MacBook can automatically change its screen brightness when you’re on battery power, dimming your display when you’re on battery and making it brighter when you’re plugged in. This helps  increase your MacBook’s battery life.

使用电池供电时，MacBook可以自动更改屏幕亮度；使用电池时，显示屏可以使显示屏变暗；插上电源后，显示屏可以变得更亮。这有助于延长MacBook的电池寿命 。

To enable or disable this option, open the System Preferences window and click the “Energy Saver” icon. Enable the “Slightly dim the display while on battery power” checkbox under the Battery tab to make your Mac’s screen dimmer when on battery power, or uncheck it to prevent your Mac from dimming the display automatically. Just remember that unchecking it might drain your battery faster.

要启用或禁用此选项，请打开“系统偏好设置”窗口，然后单击“节能器”图标。 启用“电池”选项卡下的“在使用电池供电时使显示器稍微变暗”复选框，以使Mac电池在使用电池供电时屏幕变暗，或者取消选中它以防止Mac自动使显示器变暗。 请记住，取消选中它可能会更快耗尽电池。

Unlike on Windows, you can’t customize the exact display brightness levels your Mac uses when it’s plugged in and unplugged here. However, you can adjust your Mac’s display brightness to your desired level, and this option will adjust the display brightness to be slightly dimmer than the brightness you choose.

与Windows不同，您无法自定义Mac在此处插入和拔出时使用的确切显示亮度级别。 但是，您可以将Mac的显示亮度调整到所需的水平，并且此选项会将显示亮度调整为比您选择的亮度稍暗。

如何根据环境光自动调节亮度 (How to Automatically Adjust Brightness Based on Ambient Light)

Macs with built-in ambient light sensors can monitor the light level nearby and automatically adjust the display’s brightness level to be suitable. This means making the display brighter when it’s bright near you, and making the screen dimmer when you’re in the dark.

带有内置环境光传感器的Mac机可以监控附近的光照水平，并自动调整显示屏的亮度水平以适应需要。 这意味着在您附近变亮时，显示屏会变亮；在黑暗中，显示屏会变暗。

To find this option, open the System Preferences window from the Apple menu and select “Displays.” Enable “Automatically adjust brightness” and your Mac will use the ambient light sensor to automatically adjust the brightness. Disable this option and your Mac won’t do this.

要找到此选项，请从Apple菜单中打开“系统偏好设置”窗口，然后选择“显示器”。 启用“自动调节亮度”，您的Mac将使用环境光传感器自动调节亮度。 禁用此选项，您的Mac将不会执行此操作。

If you don’t see this option here at all, your Mac doesn’t have an ambient light sensor.

如果您根本没有在此处看到此选项，则说明您的Mac没有环境光传感器。

Despite the name, this option only applies to the ambient light sensor. Even if you disable the “Automatically adjust brightness” option, your Mac will still dim the display when you’re on battery power if you have the “Slightly dim the display while on battery power” option enabled.

尽管有名称，此选项仅适用于环境光传感器。 即使您禁用了“自动调节亮度”选项，如果启用了“使用电池电源时稍微调暗显示屏”选项，使用电池供电时，Mac仍将使屏幕变暗。

Using the automatic brightness features won’t stop you from being able to adjust the brightness manually. If you ever don’t like the current brightness level, you can change it with a few keypresses. However, your Mac may automatically increase or decrease the brightness level if the lightning near you changes, and you may have to tweak it again.

使用自动亮度功能不会阻止您手动调整亮度。 如果您不喜欢当前的亮度水平，则可以通过几次按键更改它。 但是，如果您附近的闪电发生变化，您的Mac可能会自动提高或降低亮度，因此您可能需要再次对其进行调整。

翻译自: https://www.howtogeek.com/241937/how-to-adjust-your-macs-screen-brightness-manually-and-automatically/

手动更新mac