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 Camera3Ds 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 settings are intended for use in an outdoor environment, tips for settings for use in an indoor environment can be found in each setting's documentation.

Properties

float

auto_exposure_max_exposure_value

10.0

float

auto_exposure_min_exposure_value

-8.0

float

exposure_aperture

16.0

float

exposure_shutter_speed

100.0

float

frustum_far

4000.0

float

frustum_focal_length

35.0

float

frustum_focus_distance

10.0

float

frustum_near

0.05

Methods

float

get_fov ( ) const

Property Descriptions

  • float auto_exposure_max_exposure_value

Default

10.0

Setter

set_auto_exposure_max_exposure_value(value)

Getter

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

Default

-8.0

Setter

set_auto_exposure_min_exposure_value(value)

Getter

get_auto_exposure_min_exposure_value()

The minimum luminance 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

Default

16.0

Setter

set_aperture(value)

Getter

get_aperture()

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

Default

100.0

Setter

set_shutter_speed(value)

Getter

get_shutter_speed()

Time for shutter to open and close, measured in seconds. A higher value will let in more light leading to a brighter image, while a lower amount will let in less light leading to a darker image.

Only available when ProjectSettings.rendering/lights_and_shadows/use_physical_light_units is enabled.


Default

4000.0

Setter

set_far(value)

Getter

get_far()

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

Default

35.0

Setter

set_focal_length(value)

Getter

get_focal_length()

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

Default

10.0

Setter

set_focus_distance(value)

Getter

get_focus_distance()

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.


Default

0.05

Setter

set_near(value)

Getter

get_near()

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

  • float get_fov ( ) const

Returns the vertical field of view that corresponds to the frustum_focal_length. This value is calculated internally whenever frustum_focal_length is changed.