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A photometric web for a light source
Revit Architecture uses the IES file to make a photometric web to represent the light source. In general, IES
files result in more accurate lighting results in rendered images. For information about the IES file format,
go to http://www.iesna.org. See
Specifying an IES File for a Light Source
on page 1178.
Lighting Best Practices
To get the most accurate results in shaded views and rendered images, use the following best practices.
Related topic:
Render Performance and Lighting
on page 1234
Use IES Files
When specifying photometric properties for a lighting fixture, set the
light distribution
to Photometric Web,
and use the manufacturer s
IES
file, if one is available. Because an IES file provides a more accurate
representation of the light source, you get better results in a rendered image.
To obtain an IES file, go to the website of the lighting manufacturer, and search for ies. Locate the IES file
for the desired lighting product, and save it to your computer. See
Specifying an IES File for a Light Source
on page 1178.
Leave Connectors in Place
When displayed in the Family Editor, some lighting fixtures include a connector. In the drawing area, a
connector typically displays a green outline with an orange lighting bolt at the origin.
Lighting Best Practices | 1167
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