To the camera you can look at Collection of examples from discourse.threejs.org e.g.
https://hofk.de/main/discourse.threejs/2018/HumanEyesCamera/HumanEyesCamera.html
https://hofk.de/main/discourse.threejs/2019/CameraMovement/CameraMovement.html
https://hofk.de/main/discourse.threejs/2018/Camera-Beginner/Camera-Beginner.html
Links in source Code