The Spotlight node can be used with an Octane Area Light or as part of an emission material on a polygon to create a realistic spotlight behavior, without the need of an IES texture (figure 2).


Spotlight

Figure 1: Spotlight Node


Spotlight

Figure 2: An emissive cube using the Spotlight node


Spotlight Parameters

Orientation- Determines how the cone will be oriented; the choice will use the coordinates in the Direction or Target edit fields.

Direction or Target - The direction of the light or the target object.

Cone Angle - The angle of the actual cone. Smaller values produce a tighter cone.

Hardness - Sets the hardness of the penumbra (cone) boundaries. Lower values produce a softer look.

Normalize Power - Keeps the emitter angle constant when the angle changes.