正如您对高端计算机所期望的那样，几乎所有 Apple 的Mac系统都有内置摄像头。这些使您可以拨打您（和您的老板）可能希望您拨打的那种高分辨率 Zoom 电话。(high-resolution Zoom calls)无论是与同事进行视频会议，还是与朋友聊天，在(video conference)Mac上打开摄像头都很容易。
然而，这不仅仅是打开相机。一旦您知道如何在Mac(Mac)上打开相机，您就需要知道如何为要使用的应用程序进行配置、如何拍照以及如何限制相机访问(how to restrict camera access)以阻止窥探者监视您。要完成所有这些以及更多操作，请按照我们在下面概述的步骤进行操作。
如何使用 Photo Booth 在 Mac 上测试相机(How to Test the Camera on a Mac Using Photo Booth)
在Mac(Mac)上打开相机的最简单方法之一是使用 macOS 的内置应用程序之一，称为Photo Booth。这个应用程序在设计时考虑到了自拍，让您可以拍照并应用基本滤镜。请记住，它不是一个成熟的 Mac 照片编辑应用程序(fully-fledged Mac photo editing app)。
- 要使用它，请从Launchpad 启动(Launchpad)Photo Booth应用程序，可从屏幕底部的Dock访问。(Dock)
- 这将立即激活Mac(Mac)上的内置摄像头（或第三方USB摄像头）。您应该在主窗口中看到自己的实时视图。如果要自拍，请选择底部的红色(red)“拍照”按钮。(Take Photo button)
- 您保存的照片将显示在底部的轮播栏中。如果要保存照片，请右键单击照片并选择导出(Export)以保存。
- 您还可以使用Photo Booth拍摄视频或连续拍摄四张快速照片。为此，请按右下角的相机选项之一。第一个选项（左侧）将快速连续拍摄四张照片，让您选择最佳选项。第二个选项（在中间）将拍摄一张标准照片。第三个选项（右侧）将录制视频。
- 您还可以通过按右下角的效果按钮将效果应用于您的照片或视频。(Effects)在“效果(Effects)”窗口中，按下即可应用各种滤镜和失真效果——您的相机将立即更新以显示效果。
Photo Booth应用程序是在Mac上测试相机以及判断照明和整体质量的好方法。但是，您需要安装第三方应用程序才能访问更多效果、过滤器和设置。
在系统偏好设置中限制 Mac 相机访问(Restricting Mac Camera Access in System Preferences)
不幸的是， Mac(Mac)相机没有大量的内置自定义功能。如果要调整照明、质量等，则需要使用第三方应用程序。
然而，macOS 允许您做的是限制对相机的访问。这很重要，因为您不想让流氓应用查看或记录您的摄像头信息。
默认情况下，您需要从“系统偏好设置”(System Preferences)菜单批准第三方访问您的Mac相机。
- 要访问系统偏好设置(System Preferences)，请选择Mac菜单栏左上角的Apple 图标。(Apple icon )从下拉菜单中，选择系统偏好设置(System Preferences)选项。
- 在系统偏好设置(System Preferences)菜单中，选择安全和隐私(Security & Privacy)选项。
- 在“安全和隐私”(Security & Privacy)菜单的“隐私(Privacy)”选项卡中，选择“相机”(Camera)选项。这将显示有权访问您的相机的第三方应用程序列表。如果您安装新应用来访问或控制您的相机，则需要在此处进行批准。
- 要提供对您的相机的访问权限，请选中应用名称旁边的复选框以启用它。要移除访问权限，请确保禁用应用名称旁边的复选框。
这些设置仅适用于您安装的第三方应用程序。不幸的是，您不能限制对内置Mac应用程序（如Photo Booth）的访问。虽然在技术上完全禁用Mac上的摄像头是可行的，但我们不建议这样做，因为它涉及禁用 macOS 中使用的其他高级安全保护。
在 Mac 相机上使用第三方应用程序(Using Third-Party Apps with Your Mac Camera)
要充分利用Mac相机，您需要使用第三方应用程序。它们带有许多附加功能，例如照明控制、过滤器和缩放。
某些应用程序，例如Hand Mirror，可以让您一键访问您的相机源，但不提供其他功能。其他应用程序（如网络摄像头设置(Webcam Settings)(Webcam Settings)）本身就是强大的编辑工具，其功能可让您在拍照或录制之前或在进行任何视频通话之前编辑您的相机源。
不幸的是，网络摄像头设置(Webcam Settings)等应用程序中使用的一些编辑功能仅限于其他第三方应用程序。您可以使用此类应用程序来更改视频饱和度设置，但由于Mac将此类应用程序归类为虚拟相机(virtual cameras)，因此无法在Photo Booth或FaceTime以及某些第三方应用程序（如Skype ）中使用这些效果。
System Preferences > Security & Privacy > Privacy > Camera菜单中启用对此类第三方应用程序的访问。出于安全原因，最好只安装您信任的应用程序，例如App Store中提供的应用程序。
这些应用程序在获得批准之前将经过Apple的审查。因此，安装非安全应用程序的风险会更低。如果您在线下载和安装不是来自App Store的软件，则需要确保您确实信任该来源，然后才能允许它访问您的Mac相机源。
有效使用 Mac 上的相机(Using the Camera on a Mac Effectively)
现在您知道如何在Mac(Mac)上打开相机，您可以使用它与亲人保持联系，使用Photo Booth拍摄令人印象深刻的自拍，甚至使用预览(Preview)应用程序在Mac上签署(Mac)PDF 。多亏了您的Apple 照片库(Apple Photos library)，您可以将所有相机照片保存在一个地方，同时将它们同步到您的iCloud 存储(iCloud storage)中。
然而， Mac相机真正闪耀的地方在于视频通信。您可以聊天和录制 FaceTime 视频通话(chat and record FaceTime video calls)，也可以将摄像头与第三方服务（如Zoom或Microsoft Teams ）配合使用。如果您不使用它，请(Don)不要害怕禁用摄像头访问，尤其是在您担心网络安全(network security)的情况下。
How To Turn On The Camera On a Mac
Aѕ you might expect from a high-end computer, almost аll of Apple’s Mac systems have a bυilt-in camera. These allow you to make thе sort of high-resolution Zoom calls you (and your bosses) might expect you to be making. Whether it’s a video conference with colleagues or a chat with friends, it’s easy to turn on the camera on a Mac.
It isn’t just about turning a camera on, however. Once you know how to turn on the camera on a Mac, you’ll need to know how to configure it for the apps you want to use, how to take photos, and how to restrict camera access to stop snoopers from spying on you. To do all that and more, follow the steps we’ve outlined below.
How to Test the Camera on a Mac Using Photo Booth
One of the easiest ways to turn on the camera on a Mac is to use one of macOS’ built-in apps called Photo Booth. This app is designed with selfies in mind, allowing you to take pictures and apply basic filters. Keep in mind that it isn’t a fully-fledged Mac photo editing app.
- To use it, launch the Photo Booth app from your Launchpad, accessible from the Dock at the bottom of your screen.
- This will immediately activate the built-in camera (or a third-party USB camera) on your Mac. You should see a live view of yourself in the main window. If you want to take a selfie, select the red Take Photo button at the bottom.
- Your saved photo will be visible in the carousel bar at the bottom. If you want to save the photo, right-click the photo and select Export to save it.
- You can also use Photo Booth to take videos or to take four quick pictures in succession. To do this, press one of the camera options in the bottom-right corner. The first option (on the left) will take four photos in quick succession, allowing you to pick the best option. The second option (in the center) will take a standard photo. The third option (on the right) will record a video.
- You can also apply effects to your photo or video by pressing the Effects button in the bottom right. In the Effects window, various filters and distortion effects can be applied by pressing them—your camera will be updated to show the effect immediately.
The Photo Booth app is a great way to test the camera on your Mac, as well as judge the lighting and overall quality. You’ll need to install a third-party app to gain access to more effects, filters, and settings, however.
Restricting Mac Camera Access in System Preferences
Unfortunately, there isn’t a significant amount of built-in customization for your Mac camera. If you want to adjust the lighting, quality, and more, you’ll need to use a third-party app.
What macOS allows you to do, however, is limit the access to your camera. This is important, as you don’t want to allow a rogue app to view or record your camera feed.
By default, you’ll need to approve third-party access to your Mac camera from the System Preferences menu.
- To access System Preferences, select the Apple icon in the top-left corner of the Mac menu bar. From the drop-down menu, select the System Preferences option.
- In the System Preferences menu, select the Security & Privacy option.
- In the Privacy tab in the Security & Privacy menu, select the Camera option. This will show the list of third-party apps that have access to your camera. If you install a new app to access or control your camera, you’ll need to approve it here.
- To provide access to your camera, select the checkbox next to the app name to enable it. To remove access, make sure that the checkbox next to an app name is disabled.
These settings only apply to third-party apps you install. Unfortunately, you can’t restrict access to built-in Mac apps like Photo Booth. While it is technically possible to disable the camera on a Mac completely, it isn’t something we recommend, as it involves disabling other high-level security protection used in macOS.
Using Third-Party Apps with Your Mac Camera
To get the most out of your Mac camera, you’ll need to use a third-party app. These come with many additional features, such as lighting controls, filters, and zooming.
Some apps, like Hand Mirror, will give you one-click access to your camera feed but offer no additional features. Other apps, like Webcam Settings, are powerful editing tools in their own right, with features that let you edit your camera feed before you take photos or recordings, or before any video calls you make.
Unfortunately, some of the editing used in apps like Webcam Settings is restricted to other third-party apps. You could use apps like these to change your video saturation settings, but as Mac classifies apps like these as virtual cameras, the effects can’t be used in Photo Booth or FaceTime, as well as some third-party apps like Skype.
You’ll need to enable access to third-party apps like these in the System Preferences > Security & Privacy > Privacy > Camera menu. For security reasons, it’s best to only install apps you trust, such as those available in the App Store.
These apps will have been vetted by Apple before being approved. Because of this, the risk of installing a non-secure app will be lower. If you download and install software online that isn’t from the App Store, you’ll need to make sure that you really trust the source before you allow it access to your Mac camera feed.
Using the Camera on a Mac Effectively
Now that you know how to turn on the camera on a Mac, you can use it to stay in touch with loved ones, take impressive selfies using Photo Booth, or even sign a PDF on a Mac using the Preview app. Thanks to your Apple Photos library, you can save all of your camera photos in one place, syncing them to your iCloud storage as you do so.
Where the Mac camera really shines, however, is in video communication. You can chat and record FaceTime video calls, or you can use your camera with third-party services like Zoom or Microsoft Teams. Don’t be afraid to disable camera access if you’re not using it, especially if you’re worried about your network security.
