Physical Lens Flare

Updated: 24 Feb 2025

Add a physically correct lens flare reflections and a starburst flare to the scene.

Method #

This node simulates a lens setup to generate physically correct lens reflections and a starburst pattern from a given 3D transform point.

Lens Reflections

Parameter	Details
Intensity	TBC
Chroma	TBC
Reflect Gamma	TBC
Coating Quality	TBC
Fresnel Spectrum	TBC
Fresnel Variance	TBC
Max Size	TBC
Resolution	TBC Full : TBC Half : TBC Quarter : TBC

Attributes

These properties control the core behaviours of the node.

Parameter	Details
Active	Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.
Viewport Info	Show additional information in the viewwport about the Lens Setup. Off : Don’t show additional information in the viewport. Show Lenses : Show graph of the lens setup, and how the light is refracted and reflected in it.
Light Mode	Effects the dimming of the lens reflections and starburst. Also controls the size of the starburst. Near : The light source is treated as a near distance light. Size of the starburst is scaled based on the distance to the camera. Distant : The light source is treated as an infinite sized distant light source. Size of the starburst is
Mask	When on, uses a depth based mask area around the light point to cover areas of the lens reflections and/or starburst pattern. Off : Don’t use the depth mask area. All : Mask both starburst and the lens reflections. Starburst : Mask the starburst pattern. Effects the aperture shape used for the starburst flare calculation. Reflections : Mask the lens reflections. The masked light rays are dimmed out from the lens reflections, resulting in seeing the edge shapes of blocking geometry in the lens reflections.

Lenses

Aperture

Starburst