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Override – Enables the overriding of the ISO, Shutter speed, and F-stop values. Corona uses camera values instead of the values from the render settings.

ISO –The ISO is the camera's sensor light sensitivity, and it stands for International Organization for Standardization. Using higher ISO values increases the sensor light sensitivity, resulting in brighter images, but at the same time, it introduces more visible noise (grain) to the image.

Shutter speed – The shutter speed controls the time that the camera's shutter will be open, allowing light to be captured by the camera's sensor. This time could be either a fraction of a second or more than one whole second. When using a long shutter speed (in other words, exposing the camera's sensor for a significant period of time) and objects are moving, this results in blurred objects along the direction of motion; this is also known as motion blur. This effect is commonly used to communicate the sense of speed or motion. On the other hand, when using a fast shutter speed value (a small fraction of time), you could almost eliminate the object's motion, even from fast-moving objects like cars driving past.

F-stop – The f-stop value, also known as the f-number, is the ratio between the lens focal length and the aperture's diameter. The f stands for focal length and it is written as a fraction; in other words, think of an aperture of f/16 as 1/16 (one-sixteenth), or an aperture of f/8 is 1/8 (one-eighth). Using this same logic, an aperture of f/8 is larger than an aperture of f/16.

For example, if you have a 50mm f/2.8 lens, and the f-stop value is set to f/4, then the diameter of the aperture blades (or diaphragm) in your lens will be 12.5 mm (50mm / 4), whereas setting the f-stop at f/16, the diameter will be only 3.5 mm (50mm / 16), and so on.

Sensor width (mm) – Describes the physical width of the camera's sensor. The sensor size can be measured in mm or inches. A full-frame sensor measures 36 x 24mm (W x h), and a four-thirds sensor ("4/3") measures 17 x 13mm (W x h).

Focus distance– Defines the distance measured from the camera's origin out to a virtual plane that lies perpendicular to the camera's angle of view, on which all objects will be displayed perfectly in focus.

Camera physical size – Determines the physical size of the camera lenses. With the default value of 0, the camera will always either be completely inside a medium or completely outside of it. In order to render an image that is partly in a medium and partly outside of it (e.g. an image that shows both above-water and underwater parts of the scene), you must set the physical size in such a way that a box of this size centered in the camera origin overlaps the boundary of the medium (e.g. the surface of the water). This imaginary box can also be seen as an object with a slicer material that removes the part of the medium surrounding the camera.

Show physical size – Shows the camera's physical size in the viewport.