Controlled falloff


The more scattered light is, the more rapidly its effect will decrease. A globe light hung near a wall may produce 100 lumens at its own height, but as few as 20 near the floor. To achieve such rapid decreases in Imagine, one must use the Controlled Falloff option. With the exception of shaped point source lights, one needs only to adjust the length of the y axis to quickly set the lights range. If a conic or pyramidal beam is desired, the size of the axes needs to be set first to the desired proportions. Then all may be simultaneously scaled, so that the shape of the beam is not changed when the size of the y axis is altered to effect the brightness.

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