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Backbody Temperature and lights

Posted: Sun Aug 30, 2020 10:55 pm
by Leandro Oliveira
Hi, guys.

Is it possible to use Backbody Temperature with lights? Not a meshlight object.

Thanks in advance.

Re: Backbody Temperature and lights

Posted: Tue Sep 01, 2020 7:33 am
by FarbigeWelt
Leandro Oliveira wrote:
Sun Aug 30, 2020 10:55 pm
Hi, guys.

Is it possible to use Backbody Temperature with lights? Not a meshlight object.

Thanks in advance.
If not implemented in 2.5 alpha, I guess not. It has been discussed several times.
A triangle mesh with emission equals one area light.
A ditto triangle at the first‘s backside gets closer to a point light with two light sources. To simulate a point light the triangles‘ surface should be tiny.

Maybe you have it like me and artistic power setting sound rather mystic, then switch and you are able to choose lux, lumen or candela.

I like lumen because this fits good to LED package information and size of the light does not matter.

Re: Backbody Temperature and lights

Posted: Tue Sep 01, 2020 10:27 pm
by Leandro Oliveira
Thank you, FarbigeWelt. I´ll make some tests about relationship between Light and Meshlight intensities.

Re: Backbody Temperature and lights

Posted: Wed Sep 02, 2020 1:39 pm
by FarbigeWelt
Leandro Oliveira wrote:
Tue Sep 01, 2020 10:27 pm
Thank you, FarbigeWelt. I´ll make some tests about relationship between Light and Meshlight intensities.
You might be interested in my post here: viewtopic.php?f=4&t=2528&p=25075#p25075, especially my dot-blend-file. :idea:

Re: Backbody Temperature and lights

Posted: Tue Sep 08, 2020 6:40 pm
by Leandro Oliveira
Thank you, man! I´ll take a look.