Chapter 3, Chi Leung's hub, is the longest chapter in Viewfinder as it consists of 5 levels. When you exit the trolley, use the first teleporter you see on your left to jump right into level 1. From ...

To your right will be a blue teleporter inside a cage. To your left will be a gate. Go straight until you reach the camera. Take a picture of the sky. Come back and use the photo of the sky to open ...