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<p>I experienced a similar issue in certain situations, where
playing with MIS on/off helped to workaround this.</p>
<p>Please file a bugreport.</p>
<p><br>
</p>
<p>Jens<br>
</p>
<br>
<div class="moz-cite-prefix">Am 12.02.2017 um 10:57 schrieb Guido
Medici:<br>
</div>
<blockquote
cite="mid:CAEHcXZWQNvhu0+MkXWSQj9ZgyVX-_rNtn6FqDwkFUui1U-z4FQ@mail.gmail.com"
type="cite">
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<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
moz-do-not-send="true"
href="http://blender.stackexchange.com/questions/73507/complex-lighting-situations-issues-light-intensity-decreases-number-lights-inc">http://blender.stackexchange.com/questions/73507/complex-lighting-situations-issues-light-intensity-decreases-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>
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<div style="font-size:12.8px"><b><font
face="monospace, monospace" size="2">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
color="#000000" face="monospace,
monospace" size="1"><b>.......................................</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
moz-do-not-send="true"
href="mailto:guido.medici89@gmail.com"
target="_blank">guido.medici89@gmail.com</a></span></div>
<div style="text-align:left"><font
face="monospace, monospace" size="1"><a
moz-do-not-send="true"
href="http://www.behance.net/Guido_Medici"
target="_blank">http://www.behance.net/Guido_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>
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<div style="text-align:left"><font
color="#000000" face="monospace,
monospace" size="1"><b>.......................................</b></font></div>
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<div
style="text-align:left;font-size:12.8px"><b><font
color="#cccccc" face="arial,
helvetica, sans-serif" size="1"><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
face="monospace, monospace" size="1">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>
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<pre wrap="">_______________________________________________
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</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
Jens Verwiebe
Allerskehre 44 - 22309 Hamburg
Tel.: +49 40 68 78 50
mobile: +49 172 400 49 07
mailto: <a class="moz-txt-link-abbreviated" href="mailto:info@jensverwiebe.de">info@jensverwiebe.de</a>
web: <a class="moz-txt-link-freetext" href="http://www.jensverwiebe.de">http://www.jensverwiebe.de</a></pre>
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