To Change a Viewport to a Camera View

  1. In any viewport, click or right-click the Point-Of-View viewport label menu.
  2. From the menu that opens, choose Cameras.

    The Cameras submenu shows the name of each camera in the scene.

  3. Click the name of the camera you want.

    The viewport now shows the camera's point of view.

    The default keyboard shortcut for camera viewports is C.

    Making a camera viewport active does not automatically select the camera. To adjust a camera by using its viewport and the Modify panel at the same time, select the camera and then make the Camera viewport active.

    As in other viewports, in Camera viewports you can opt to see a display of safe frame areas to help you compose the final rendered output.

Tip: Alternatively, you can automatically create a Physical camera that matches the view in the active viewport and set the viewport to use that camera by pressing Ctrl+C.
Note: When you change to a Camera view, the navigation buttons at the lower-right corner of the 3ds Max window change to Camera viewport controls. (The Zoom Extents All flyout and the Min/Max toggles remain visible. These controls aren't specific to camera views. Clicking Zoom Extents All affects other kinds of viewports, but does not affect Camera viewports.)