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CameraAttributesPhysical
Inherits: CameraAttributes < Resource < RefCounted < Object
Physically-based camera settings.
Description
CameraAttributesPhysical is used to set rendering settings based on a physically-based camera's settings. It is responsible for exposure, auto-exposure, and depth of field.
When used in a WorldEnvironment, it provides default settings for exposure, auto-exposure, and depth of field that will be used by all cameras without their own CameraAttributes, including the editor camera. When used in a Camera3D, it will override any CameraAttributes set in the WorldEnvironment and will override the Camera3D's Camera3D.far, Camera3D.near, Camera3D.fov, and Camera3D.keep_aspect properties. When used in VoxelGI or LightmapGI, only the exposure settings will be used.
The default values are intended for use in an outdoor environment; tips for values to use in an indoor environment can be found in each setting's documentation.
Note: Depth of field blur is only supported in the Forward+ and Mobile rendering methods, not Compatibility.
Note: Auto-exposure is only supported in the Forward+ rendering method, not Mobile or Compatibility.
Tutorials
Properties
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Methods
get_fov() const |
Property Descriptions
float auto_exposure_max_exposure_value = 10.0 🔗
void set_auto_exposure_max_exposure_value(value: float)
float get_auto_exposure_max_exposure_value()
The maximum luminance (in EV100) used when calculating auto exposure. When calculating scene average luminance, color values will be clamped to at least this value. This limits the auto-exposure from exposing below a certain brightness, resulting in a cut off point where the scene will remain bright.
float auto_exposure_min_exposure_value = -8.0 🔗
void set_auto_exposure_min_exposure_value(value: float)
float get_auto_exposure_min_exposure_value()
The minimum luminance (in EV100) used when calculating auto exposure. When calculating scene average luminance, color values will be clamped to at least this value. This limits the auto-exposure from exposing above a certain brightness, resulting in a cut off point where the scene will remain dark.
float exposure_aperture = 16.0 🔗
Size of the aperture of the camera, measured in f-stops. An f-stop is a unitless ratio between the focal length of the camera and the diameter of the aperture. A high aperture setting will result in a smaller aperture which leads to a dimmer image and sharper focus. A low aperture results in a wide aperture which lets in more light resulting in a brighter, less-focused image. Default is appropriate for outdoors at daytime (i.e. for use with a default DirectionalLight3D), for indoor lighting, a value between 2 and 4 is more appropriate.
Only available when ProjectSettings.rendering/lights_and_shadows/use_physical_light_units is enabled.
float exposure_shutter_speed = 100.0 🔗
Time for shutter to open and close, evaluated as 1 / shutter_speed seconds. A higher value will allow less light (leading to a darker image), while a lower value will allow more light (leading to a brighter image).
Only available when ProjectSettings.rendering/lights_and_shadows/use_physical_light_units is enabled.
Override value for Camera3D.far. Used internally when calculating depth of field. When attached to a Camera3D as its Camera3D.attributes, it will override the Camera3D.far property.
float frustum_focal_length = 35.0 🔗
Distance between camera lens and camera aperture, measured in millimeters. Controls field of view and depth of field. A larger focal length will result in a smaller field of view and a narrower depth of field meaning fewer objects will be in focus. A smaller focal length will result in a wider field of view and a larger depth of field meaning more objects will be in focus. When attached to a Camera3D as its Camera3D.attributes, it will override the Camera3D.fov property and the Camera3D.keep_aspect property.
float frustum_focus_distance = 10.0 🔗
Distance from camera of object that will be in focus, measured in meters. Internally this will be clamped to be at least 1 millimeter larger than frustum_focal_length.
Override value for Camera3D.near. Used internally when calculating depth of field. When attached to a Camera3D as its Camera3D.attributes, it will override the Camera3D.near property.
Method Descriptions
Returns the vertical field of view that corresponds to the frustum_focal_length. This value is calculated internally whenever frustum_focal_length is changed.