...
By default Maxwell Studio has a standard perspective visualization mode. It is not necessary to create a camera for your scene to be able to render, but it is recommended. It will give you full control over the final look of the image.
Creating a camera
- Use the viewport menu (right-click in the viewport) and choose “New Camera”
- press CTRL + Shift + C (Cmd + Shift + C on Mac OSX)
- right-click in the Cameras List panel and choose “New Camera”.
...
To switch to a camera viewport, click the Viewport Switch icon in the upper left corner and choose the desired camera or double click on the camera in the Cameras List panel. Selecting a camera in the Camera List panel will display the properties of that camera in the Camera Parameters panel.
Camera frustum (Yellow frame)
The camera frustum is adapted according to the resolution of the image set in the Camera Parameters panel. When the render is launched from the camera view, only the region inside the frustum is rendered. The same applies when you launch a viewport render.
...