An effect that can be interesting is to illuminate the sky changing shape to simulate a sunrise or a sunset on “time-lapse“.
Lighting variables, as well as other variables in Blender, are likely to be animated by the technique of Key frames.
If you select the rendering mode “Cycles” we can see that on the menu “World” we can modify the ambient lighting.
In this selector which defines the “Color”, clicking on the small button to the right, we indicate that we want to use a texture for the sky “Sky Texture”
This selection offers new controls to modify the ambient light of the scene.
Interest is particularly graphic control spherical, you to change the color and intensity of light passing from one medium bluish value as default one:
others that can simulate a sunset lighting with different tones in the shadows lengthen its hardness.
For example, if we change control as shown in the picture, the result would be:
Only we would modoficar color lights the scene support to give the desired tone and direction of the shadow that seek:
These variables are animatable, so we can move from one color to another in lighting along the frames. Just situaremos the mouse over the variable to modify and press the key “I” of “Insert” to insert a key animation.
When you insert the key animation (Key-frame) variable control turns yellow:
Finally add that along with texture “Sky” can add images to the background. For that we need a shader “Mix” or “Add” permitting overlap or mix different shaders, as an image and lighting. We will see an example later complex.