[Bf-cycles] Complex lighting situations issues_light intensity decreases > number lights increases

[F Tamas]

But setting clamp to 0 makes fireflies, so rendertime will be far longer,
am I right?

2017-02-12 14:50 GMT+01:00 Stefan Werner <stewreo at gmail.com>:

> 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.
>
> -Stefan
>
> Am 12.02.2017 um 10:57 schrieb Guido Medici <guido.medici89 at gmail.com>:
>
> Hi everyone,
> first of all I’d like to thank you for all the effort you put to
> constantly develop and improve Blender and Cycles.
> Unfortunately, I’ve stumbled upon an issue that limits the usage of Cycles
> in complex lighting situations.
> 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.
> I’ll try to explain the issue as best as possible, In this link:
>
>  http://blender.stackexchange.com/questions/73507/complex-
> lighting-situations-issues-light-intensity-decreases-number-lights-inc
>
> you'll can find some pictures that better explain the problem.
> 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.
> 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.
> Clearly, the problem becomes extremely limiting especially in situations
> where multiple sources of illumination are required.
> 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.
>
> best regards,
> *Guido Medici*
>
> *.......................................*
> *GUIDO MEDICI*
> Via Nino Cattozzo, 50, 45011 Adria (Ro)
> guido.medici89 at gmail.com
> http://www.behance.net/Guido_Medici
> P.I. 01488300292
> C.F. MDCGDU89A24H620U
>
> *.......................................*
>
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>
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