<div dir="ltr">thanks guys, so what are the alternatives other than increasing subd or light size? I mean code wise &quot;other solutions even if they are biased, by introducing some epsilon?&quot;<br>@Sergey : ideas? (where to introduce the epsilon)</div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jul 22, 2016 at 8:23 PM, Jens Verwiebe <span dir="ltr">&lt;<a href="mailto:info@jensverwiebe.de" target="_blank">info@jensverwiebe.de</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
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    <p>Simon wrote a nice roundup how to avoid this problem:
<a href="http://www.luxrender.net/forum/viewtopic.php?f=16&amp;t=12915&amp;sid=491a9ddde516d57dd801dfab3f728992#p122655" target="_blank">http://www.luxrender.net/forum/viewtopic.php?f=16&amp;t=12915&amp;sid=491a9ddde516d57dd801dfab3f728992#p122655</a></p>
    <p><br>
    </p>
    <p>Jens<br>
    </p><div><div class="h5">
    <br>
    <div>Am 22.07.2016 um 19:17 schrieb Matthew
      Heimlich:<br>
    </div>
    <blockquote type="cite">
      <div dir="ltr">This is a terminator error. Without introducing
        bias, this exists in every path tracer. There&#39;s really not much
        to be done about it aside from increasing the resolution of the
        mesh.</div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Fri, Jul 22, 2016 at 1:11 PM,
          Mohamed Sakr <span dir="ltr">&lt;<a href="mailto:3dsakr@gmail.com" target="_blank">3dsakr@gmail.com</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="ltr">Hi,<br>
              <br>
              there is a potential problem with Cycles shading.<br>
              please help to clarify what is going wrong.<br>
              <br>
              @Sergey , @Brecht<br>
              this scene is just a light, sphere and a plane., sphere
              subd = 32. , even if the sphere is not perfect, it got a
              remarkable problem in shading, what causes this, + how to
              solve it.<br>
              <br>
              cheers,<br>
              Mohamed Sakr<br>
              <br>
              <img src="cid:part2.60599E9E.135A8028@jensverwiebe.de" alt="Inline image 1" height="408" width="544"><br>
            </div>
            <br>
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            <br>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
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      <br>
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</pre>
    </blockquote>
    <br>
    </div></div><span class="HOEnZb"><font color="#888888"><pre cols="72">-- 

Jens Verwiebe
Allerskehre 44 - 22309 Hamburg

Tel.: +49 40 68 78 50
mobile: +49 172 400 49 07
mailto: <a href="mailto:info@jensverwiebe.de" target="_blank">info@jensverwiebe.de</a>
web: <a href="http://www.jensverwiebe.de" target="_blank">http://www.jensverwiebe.de</a></pre>
  </font></span></div>

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<br></blockquote></div><br></div>