<div dir="ltr">But setting clamp to 0 makes fireflies, so rendertime will be far longer, am I right?<br></div><div class="gmail_extra"><br><div class="gmail_quote">2017-02-12 14:50 GMT+01:00 Stefan Werner <span dir="ltr"><<a href="mailto:stewreo@gmail.com" target="_blank">stewreo@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto"><div></div><div>Try setting the clamp direct/indirect render settings to 0, that might make it go away. Stochastic sampling of many lights can lead to very bright individual samples, and when those samples get clamped before added to a pixel, energy (light) is lost.</div><span class="HOEnZb"><font color="#888888"><div><br></div><div>-Stefan</div></font></span><div><div class="h5"><div><br>Am 12.02.2017 um 10:57 schrieb Guido Medici <<a href="mailto:guido.medici89@gmail.com" target="_blank">guido.medici89@gmail.com</a>>:<br><br></div><blockquote type="cite"><div><div dir="ltr"><div class="gmail_default"><div class="gmail_default"><font face="monospace, monospace">Hi everyone,</font></div><div class="gmail_default"><font face="monospace, monospace">first of all I’d like to thank you for all the effort you put to constantly develop and improve Blender and Cycles.</font></div><div class="gmail_default"><font face="monospace, monospace">Unfortunately, I’ve stumbled upon an issue that limits the usage of Cycles in complex lighting situations.</font></div><div class="gmail_default"><font face="monospace, monospace">I’ve tried to look for a solution on several different forums, but all my attempts were unsuccessful so I’ve decided to write to you directly.</font></div><div class="gmail_default"><font face="monospace, monospace">I’ll try to explain the issue as best as possible, In this link:</font></div><div class="gmail_default"><font face="monospace, monospace"><br></font></div><div class="gmail_default"><font face="monospace, monospace"> <a href="http://blender.stackexchange.com/questions/73507/complex-lighting-situations-issues-light-intensity-decreases-number-lights-inc" target="_blank">http://blender.stackexchange.<wbr>com/questions/73507/complex-<wbr>lighting-situations-issues-<wbr>light-intensity-decreases-<wbr>number-lights-inc</a> </font></div><div class="gmail_default"><span style="font-family:monospace,monospace"><br></span></div><div class="gmail_default"><span style="font-family:monospace,monospace">you'll can find some pictures that better explain the problem.</span></div><div class="gmail_default"><font face="monospace, monospace">I have noticed that the more “lights” are introduced in a scene (both interior and exterior) the more the intensity of each lamp is reduced.</font></div><div class="gmail_default"><font face="monospace, monospace">I’ve notices the same issue with HDRI images. Again, adding more sources of light into the scene, results in a decreased intensity of the HDRI image itself.</font></div><div class="gmail_default"><font face="monospace, monospace">Clearly, the problem becomes extremely limiting especially in situations where multiple sources of illumination are required.</font></div><div class="gmail_default"><font face="monospace, monospace">In the attachments I’m showing the aforementioned issue, as you can see the source of lighting (in this case a simple Point lamp) decreases its intensity as the number lights increases. On every picture I’m adding one or more lamps.</font></div><div class="gmail_default"><font face="monospace, monospace"><br></font></div><div class="gmail_default"><font face="monospace, monospace">best regards,</font><span style="font-family:monospace,monospace;font-size:12.8px"> </span></div></div><div><div class="m_-5414622060992528711gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div style="font-size:12.8px"><b><font size="2" face="monospace, monospace">Guido Medici</font></b></div><div style="font-size:12.8px"><font face="monospace, monospace"> </font></div><div style="text-align:left;font-size:12.8px"><div style="font-size:12.8px"><font size="1" face="monospace, monospace" color="#000000"><b>..............................<wbr>.........</b></font></div></div><div style="text-align:left;font-size:12.8px"><font face="monospace, monospace"><u style="color:rgb(0,0,0);font-size:x-small">GUIDO MEDICI</u><span style="font-size:12.8px"> </span></font></div><div style="text-align:left;font-size:12.8px"><span style="color:rgb(0,0,0);font-family:monospace,monospace;font-size:x-small">Via Nino Cattozzo, 50, 45011 Adria (Ro)</span><br></div><div style="text-align:left;font-size:12.8px"><span style="font-family:monospace,monospace;font-size:x-small"><a href="mailto:guido.medici89@gmail.com" target="_blank">guido.medici89@gmail.com</a></span></div><div style="text-align:left"><font size="1" face="monospace, monospace"><a href="http://www.behance.net/Guido_Medici" target="_blank">http://www.behance.net/Guido_<wbr>Medici</a></font><br></div><div style="text-align:left;font-size:12.8px"><span style="color:rgb(0,0,0);font-family:monospace,monospace;font-size:x-small">P.I. 01488300292</span></div><div style="text-align:left;font-size:12.8px"><span style="color:rgb(0,0,0);font-family:monospace,monospace;font-size:x-small">C.F. MDCGDU89A24H620U</span></div></div></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"></blockquote><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"></blockquote><div><div dir="ltr"><div dir="ltr"><div><div style="text-align:left"><font size="1" face="monospace, monospace" color="#000000"><b>..............................<wbr>.........</b></font></div></div><div style="text-align:left;font-size:12.8px"><b><font size="1" face="arial, helvetica, sans-serif" color="#cccccc"><br></font></b></div><div style="text-align:left;font-size:12.8px"><span style="color:rgb(153,153,153);line-height:18.46px"><font size="1" face="monospace, monospace">Ai sensi del D.Lgs. 19603, le informazioni e le immagini contenute nel presente messaggio e negli eventuali allegati sono da considerarsi esclusivamente e strettamente riservati. Il destinatario è l’unico autorizzato a leggerlo, usarlo, copiarlo e sotto la propria responsabilità diffonderlo. A chi dovesse indebitamente pervenire si notifica che è proibito qualsiasi uso, copia, distribuzione e divulgazione di quanto in esso contenuto (art. 616 c.p.). Qualora questa comunicazione fosse stata ricevuta per errore, vi invitiamo cortesemente a darcene notizia ed a provvedere alla distruzione del messaggio.</font></span></div></div></div></div></div></div></div></div></div></div></div>
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