This product includes 4 different ready-to-use custom objects: a VRay Camera, a Corona Camera, and two different helpers that allow you to manage different aspect ratios and outputs in the same scene with minimum effort. They are a faster and better (for some aspects) alternative to Scene States. They come with different solutions to manage different scenarios. See the images for detailed instructions and use cases. It works better with last 3dsMax versions, and VRay and Corona, but can work also with older versions.