2009

photometric files available from lighting manufacturers to design lighting

based on commercially available lights.

TIP Combine Photometric lights with the radiosity solution on page 6168 to generate

physically accurate renderings or perform lighting analysis.

Tips

■ You can animate not only the location of a light, but also its color, intensity

and some other creation parameters. See Animating Lights on page 4996.

■ You can use the Place Highlight on page 1018 command to change a light's

position. See the Procedures in

Working with Lights on page 4975.

■ A Light viewport on page 7614 can be a useful way to adjust lights other than

omni lights.

■ To simulate sunlight, use a

daylight or sunlight system on page 5139, which

allows you to set the date, time, and geographic location of your model.

The daylight system is photometric, while the sunlight system uses a

standard directional light.

NOTE The standard Skylight on page 5065 light is distinct from the photometric

daylight lights. The Skylight light is for use with

light tracing on page 6154.