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This page provides information on the V-Ray Dome Light.
Overview
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A Dome light shines inward at the scene as if from a spherical or hemispherical light source outside the scene extents. This light is frequently used for Image-Based lighting (IBL) using panoramic HDR images used as environments. HDRs with a Dome light can create realistic lighting as well as environmental reflections.
A Dome light's illumination comes from a hemispherical dome above the y-axis of the light, or as a full sphere.
UI Paths:
||obj Network|| > V-Ray > V-Ray Dome Light
||V-Ray Shelf|| > Light Dome
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Example: Dome Spherical
The example below shows the difference between the two types of Dome Light - a sphere or a hemisphere. When a sphere is used the projection of the HDRI goes below the horizon, while when a hemisphere is selected, the render is halved in two by the horizon.
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Example: Finite Dome
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This example shows how enabling the Finite Dome option adds depth to a scene's background and augments the lighting. It also adds a ground plane. With the Finite Dome enabled, the object looks as if it is actually placed in the background scene.
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Shadows
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Textures
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Advanced
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Example: Photon Emission
The example below shows how increasing the Emit Radius and Target Radius parameters affect the caustics effect. The Dome light gizmo shows the area where the caustics are generated. Higher Emit Radius value makes the effect more spread out and blurry.
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