After Effects is a powerful tool for creating motion graphics and visual effects, and its 3D features allow users to create stunning 3D compositions. However, sometimes you may find yourself stuck in the 3D view and need to return to the default 2D view to make adjustments to your composition. Here's how to exit the 3D view in After Effects:

1. Select the Composition Window: The first step is to make sure the Composition window is selected. This is where you can see your composition and make adjustments to the layers and properties.

2. Reset the Camera: If you're viewing the composition from a 3D perspective, you'll need to reset the camera to return to the 2D view. To do this, select the camera layer in the Timeline panel and press the 'P' key to reveal the position properties. Then, right-click on the 'Position' property and choose 'Reset'.

3. Adjust the View Layout: In some cases, you may have accidentally switched to a 3D view layout. To return to the default 2D view layout, go to the Composition panel and click on the 'View Layout' menu in the bottom left corner. Choose '2 Views - Horizontal' or '1 View' to switch back to the 2D view.

4. Toggle the 3D Layer Switch: Another common reason for being stuck in the 3D view is having a layer with the 3D switch enabled. To exit the 3D view, go to the Timeline panel and look for any layers with the 3D switch enabled (the cube icon). Click on the cube icon to toggle the 3D switch off and return the layer to 2D.

By following these steps, you can easily exit the 3D view in After Effects and return to the default 2D view to make adjustments to your composition. Whether you need to reset the camera, adjust the view layout, or toggle the 3D layer switch, these methods will help you navigate through the 3D features in After Effects with ease.