The shadow of my icosphere is to hard. By the option “ray shad” of the lamp it doesn’t work. Also options of “area” source don’t get me what I want! Use blender 2.49b
Such like this I want to get my shadow.
http://www.blender.org/development/release-logs/blender-246/raytraced-soft-shadows/
You need to increase the “Samples” setting on your lamp to higher than 1 for the “soft size” to have any effect. I would try samples set to 12, and soft-size set to 3.
Increase ‘Samples’ value e.g. 4 and set ‘Soft’ value to 1-3.
Edit: A bit too late
yeah, it works. thanks