In DaVinci Resolve 15, changing the camera view for 3D is a powerful tool that allows you to create dynamic and engaging visuals for your video projects. To change the camera view, follow these simple steps:

1. Open the Fusion page: Navigate to the Fusion tab at the bottom of the screen to access the Fusion page.

2. Add a 3D node: In the Fusion page, add a 3D node to your project by right-clicking in the node graph and selecting '3D'.

3. Navigate the 3D environment: Once the 3D node is added, you can navigate the 3D environment by using the mouse and keyboard controls. To pan, hold down the middle mouse button and move the mouse. To orbit, hold down the Alt key and the middle mouse button and move the mouse. To zoom, scroll the middle mouse button.

4. Change the camera view: To change the camera view, select the 3D node in the node graph and navigate to the 3D viewer. In the 3D viewer, you can change the camera view by selecting the 'Camera' tab and adjusting the position, rotation, and field of view parameters to achieve the desired angle and perspective for your shot.

5. Keyframe the camera movement: If you want to create dynamic camera movements, you can keyframe the camera's position and rotation parameters over time. This allows you to animate the camera view for smooth and dynamic transitions in your 3D scene.

By following these steps, you can change the camera view for 3D in Resolve 15 to unleash your creativity and produce stunning visuals for your video projects. Experiment with different camera angles and movements to bring your 3D scenes to life and captivate your audience with engaging visual storytelling.