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Use Camera scene environment – Controls the override of the global illumination from the camera. When Enabled, the color/map below this control will be used as override. When Disabled, the override will be disabled.

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Use Camera scene environment override is available starting from Corona 12.

Direct Override – Controls override of the environment map visible directly from the camera.
Reflect Override – Controls override of the environment map visible in reflections.
Refract Override – Controls override of the environment map visible in refractions.
Global Volume Override - Enables global volume override for this camera.

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Environment Override Examples

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The below examples come from a single scene:

A camera using a forest HDRI as the scene environment with a reflection override enabled so that there are no tree reflections in the water: 


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Another camera using a daylight HDRI as the scene environment and an evening HDRI as the reflection override:  


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Photographic Parameters


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A camera with a sky HDRI applied as a direct override. Only what is seen through the camera is affected.


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A camera with a sky HDRI applied as a refract override. Only the environment seen through transparent surfaces like glass is affected.


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A camera using a light fog volume applied via the global volume override, creating a soft atmospheric effect.


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Photographic Parameters

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Sensor and lens

Field of view – Horizontal perspective FOV in degrees.

Focal l. mm – The distance between the lens and the image sensor when the subject is in focus.

Film width mm. – Affects the amount of the depth of field effect. Increasing this value increases the depth of field effect size. This is useful for matching other parameters and output to various real-world cameras. Typical values are 36mm for a full-frame digital SLR and 25.1mm for an APS-C digital SLR.

Zoom factor – Zooms in the view without changing the Filed of View or Focal Length. Higher zoom values result in a stronger Depth of Field. This is useful when matching real-

Sensor and lens

Field of view – Horizontal perspective FOV in degrees.

Focal l. mm – The distance between the lens and the image sensor when the subject is in focus.

Film width mm. – Affects the amount of the depth of field effect. Increasing this value increases the depth of field effect size. This is useful for matching other parameters and output to various real-world cameras. Typical values are 36mm for a full-frame digital SLR and 25.1mm for an APS-C digital SLR.

Zoom factor – Zooms in the view without changing the Filed of View or Focal Length. Higher zoom values result in a stronger Depth of Field. This is useful when matching real-world camera footage.

ISO – Affects image exposure when photographic exposure is turned on. Increasing this value increases exposure and vice versa. Standard values used in photography are: 50, 100, 200, 400, 800, 1600, 3200.

F-stop – Affects the depth of field effect and image exposure (when using photographic exposure). Decreasing this value increases the exposure and the depth of field effect amount, and vice versa. Standard values used in photography are: 0.7, 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32.

Shutter

Shutter speed – Affects the image exposure (when using photographic exposure) and length of the motion blur effect. The input value is reciprocal to the result, so to set the shutter speed to 1/125 s, input 125. Longer exposure times increase exposure and motion blur length, and vice versa. Standard values used in photography are: 1, 1/2, 1/8, 1/15, 1/25, 1/30, 1/50, 1/60, 1/125, 1/150, 1/250, 1/500, 1/1000.

Shutter angle – A different way to express the shutter speed, using the movie camera convention of rotary disc shutter angle. The value is an angle out of 360-degree range, for which the shutter stays open. This means that for example, a value of 180 degrees means the shutter is open for half a frame (which is 1/50 s for 25 fps).

Mblur duration – A different way to express the shutter speed, using multiples of the current frame rate (fps). For example, a value of 0.5 means the shutter is open for half a frame (which is 1/50 s for 25 fps).

Shutter offset – Offsets the time interval from which the motion blur effect is generated. The value is defined in frames, with 0 meaning that the center of the interval is exactly in the current frame, -1 meaning that the entire interval happens just before the current frame, and 1 meaning the entire interval happens just after the current frame.

Object visibility

Enable include/exclude list – If enabled, only nodes specified by include/exclude list are visible when rendering using the selected camera.

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To learn more about using the Camera Physical Size, see: New Volume Resolving in Corona 10 at the Chaos Help Center

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 objects with a slicer material that removes the part of the medium surrounding the camera.


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Camera clipping

Enable – Enables camera clipping - only objects between the minimum and maximum distance are visible when looking through the camera both in the viewport and in rendering.

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This applies just to direct visibility rays - it does not affect GI and reflections.

Show in viewport – Shows the clipping frame in the viewport.

Near – Only surfaces beyond this distance are visible through the camera.

Far – Only surfaces closer than this distance are visible through the camera

Environment Ranges

Show in viewport – Shows the environment range in the viewport.

Near/Far – Controls the eds Max Environment range. This is used for example by the 3ds Max native Fog effect and to set Z-Depth to render element range.

Camera physical size

Show in viewport – shows camera phisical size in viewport.

Size – Determines the physical size of the camera lenses. With the default value of 0, the camera will always either be competely inside a medium or competely outside of it. In order to render image which is partly in a medium and partly outside of it (e.g. an image that shows both above water and under water 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 objects with a slicer material that removes the part of the medium surrounding the camera.

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To learn more about using the Camera Physical Size, see: New Volume Resolving in Corona 10 at the Chaos Help Center.

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Overrides

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Use Camera scene environment – Enables the global environment map override when rendering from this camera. 

Direct Override – Enables the direct environment map override when rendering from this camera. 

Reflect Override – Enables the reflect environment map override when rendering from this camera. 

Refract Override – Enables the refract environment map override when rendering from this camera. 

Global Volume Override – Enable global volume override for this camera.

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The following renders are from exactly the same scene. The volume is made from a simple water plane with displacement and surrounding walls.

 

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The camera is below the water surface:

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The camera is placed on the water surface:

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