Lighting: The Easiest Thing That’s Tough - Blender Foundations: The Essential Guide to Learning Blender 2.6 - page 116

Figure 5.21, cont'd
dark blue, respectively. Also, Blend Sky and Real Sky have been enabled. Blend Sky causes the sky to
blend between the horizon and zenith colors. Without this option, only the horizon color is used for the
entire sky. Real Sky causes the horizon to correspond to the actual horizon in the 3D world (i.e., z = 0).
Otherwise, the blend between the colors occurs simply from the bottom of the screen to the top, regard-
less of how the camera is oriented. Figure 5.22 shows the whole setup of the Environment Lighting panel
we've just described.
Let's add the sun—Shift-A, and throw a sun into the sky. Actually, if you remember, it doesn't really matter
where you put it, as long as you orient it properly. Let's pretend it's several hours before sunset, because
midday lighting is generally boring. The sun should sit at about a 30-degree angle from the horizontal.
Okay, I know that the positioning of the lamp doesn't matter to the final result, but it's the sun. I find it
easier to set its orientation if I put it up in the sky. So, move it up, then position it somewhere nice in a
top view. I've put mine off to the left of the scene. Now, use the R key in front, side, and top views to
orient the sun lamp so it appears to be pointing toward the scene objects, like the sun in Figure 5.23 .