Repeat this step for each spotlight that needs to be tilted.
5
If necessary, make adjustments to achieve the desired result.
For example, you may need to add or remove spotlights, adjust their positions, and change their
rotation angles and tilt, field, and beam angles to obtain the desired lighting effects.
TIP
To evenly illuminate a surface, position the lighting fixtures so the beam angles overlap each
other slightly.
3 spotlights with beam angles overlapping slightly for
even illumination of the wall
Angles for Spotlights
When defining a spotlight, you can specify the following angles:
■
Beam angle
: The angle at which light intensity reaches 50% of the peak intensity. Enter a value between
0 and 160 degrees. To make a spot that is small and bright, enter a smaller value.
■
Field angle
: The angle at which light intensity reaches 10% of the peak intensity. Enter a value between
0 and 160 degrees. To limit the spread of the spotlight, enter a smaller value.
■
Tilt angle
: The angle that the spotlight is tilted from its origin. You can adjust the tilt angle of a spotlight
to aim its light in the desired direction.
1132 | Chapter 17 Rendering
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