A Sun lamp provides light of constant intensity emitted in a single direction. A Sun lamp can be very handy for a uniform clear daylight open-space illumination. In the 3D View, the Sun light is represented by an encircled black dot with rays emitting from it, plus a dashed line indicating the direction of the light.
This direction can be changed by rotating the Sun lamp, like any other object, but because the light is emitted in a constant direction, the location of a Sun lamp does not affect the rendered result (unless you use the “sky & atmosphere” option).
- Energy and Color
- These settings are common to most types of lamps, and are described in Light Properties.
- Negative, This Layer Only, Specular, and Diffuse
- These settings control what the lamp affects, as described in What Light Affects.
The Sun lamp has no light falloff settings: it always uses a constant attenuation (i.e. no attenuation!).
Sky & Atmosphere¶
Various settings for the appearance of the sun in the sky, and the atmosphere through which it shines, are available. For details, see Sky and Atmosphere.