I have a small army of zombies, with a sun lamp behind them. I set the sun from "No shadow" to "Ray shadow" and now the zombies have shadows. But the shadows are much too sharp. I changed the world settings to give indirect lighting, and gave it 3 bounces, but it didn't seem to affect it. Is there a way to make the shadows from the sun more blurred, less sharp?
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1$\begingroup$ Try adding another lamp, perhaps a hemi or area lamp - to simulate bounced lighting. $\endgroup$– X-27 is done with the networkCommented Dec 18, 2015 at 16:11
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Use the Lamp > Shadow > Soft Size setting. By default for a sun lamp, it is set to 0.1, which produces sharp shadows. Increasing that number will make the shadows cast by that lamp softer.
Note: in order for you to see the softer shadows in your render, you need to increase the Lamp > Shadow > Samples value to something higher than 1.
Example: Soft Size = 0.1
Example: Soft Size = 5.0
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$\begingroup$ I thought i tried that, and it did nothing, but I looked at it again and it wasn't touched, sooo... Ah ha! It still did nothing, so I reread your answer, and I saw I had to mess with some other settings too (like sampling :P) $\endgroup$ Commented Dec 18, 2015 at 15:09
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$\begingroup$ This approach simulates a penumbra, with each sample helping define an intermediate gradient within the penumbra. $\endgroup$ Commented Dec 18, 2015 at 22:29