A Web distribution uses a photometric web definition to distribute the light. A photometric web is a 3D representation of the light intensity distribution of a light source. Web definitions are stored in files. Many lighting manufacturers provide web files that model their products; these are often available on the Internet. A web file can be in the IES, LTLI, or CIBSE format. Controls for assigning the web file are on the Web Parameters rollout.
Target Point Light (Photometric)
Free Point Light (Photometric)
Target Linear Light (Photometric)
Free Linear Light (Photometric)
Target Area Light (Photometric)
To create a light from a manufacturer's IES file:
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Choose Photometric from the drop-down list. (The default is Standard.)
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In the Object Type rollout, select any photometric light type.
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In the Intensity/Color/Distribution rollout, select Web from the Distribution list.
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If you are creating a Target Point, Linear, or Area light, drag in a viewport. The initial point of the drag is the location of the light, and the point where you release the mouse is the location of the target. If you are creating a Free Point, Linear or Area light, click in a viewport to position the light.
A light is created using the default photometric web which is a diffuse distribution shining from one edge.
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Go to the Web Parameters rollout, and select the IES file that you want to use. See Web Parameters.
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You can use the Move transform to position the light. You can also use the Place Highlight command to change a light's position.
