sun/sky issue

General questions about Indigo, the scene format, rendering etc...
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neo0.
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sun/sky issue

Post by neo0. » Tue Jun 28, 2011 1:35 pm

Im a little confused. Whenever I enable it, all my metallic/glossy objects get a very overblown blue tint. I realize that this is because they are reflecting the sky, but in real life, this isn't what usually happens. -_- Could someone maybe clear this up?

StompinTom
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Re: sun/sky issue

Post by StompinTom » Tue Jun 28, 2011 3:21 pm

neo0. wrote:Im a little confused. Whenever I enable it, all my metallic/glossy objects get a very overblown blue tint. I realize that this is because they are reflecting the sky, but in real life, this isn't what usually happens. -_- Could someone maybe clear this up?
In 'real life', reflective objects reflect their surroundings, which tends to be the sky if they are placed outside. In 'real life' you usually don't get a perfect sky all around unless you're in the middle of the desert or the ocean. There is usually much much more going on around you, hence the difference.

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Headroom
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Re: sun/sky issue

Post by Headroom » Tue Jun 28, 2011 9:46 pm

I live in the sunny south and am used to clear blue skies, perhaps with a higher turbidity. That's exactly what happens.
Just gotta keep your eyes open and observe closely ;-)

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dag
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Re: sun/sky issue

Post by dag » Wed Jun 29, 2011 2:33 am

Check this car, it's so overblown I don't even...
http://farm1.static.flickr.com/140/3215 ... bd12df.jpg

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CTZn
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Re: sun/sky issue

Post by CTZn » Wed Jun 29, 2011 5:31 am

I agree with the comments above. A real environment is altering the overall reflected sky colour by obstruction/light bleeding, and if you were in such a place your brain would compensate the perceived tones to a balance.

If you stay several minutes outside and then go back to a shadowy interior, you would there notice that those shadows are more of a reddish tint than a blue one. A simple reaction to the adaptation of your 'eyes' from the outside "blue".

I'm putting the eyes word between quotes because the signal is rather processed on the brain side I believe.
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neo0.
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Re: sun/sky issue

Post by neo0. » Wed Jun 29, 2011 8:48 am

I tried compensating w/ white balance and this seems to work pretty well. BTW, for an example look attached pic. The sky is mostly white with some red haze but the car remains mostly red. It doesn't completely alter the color of the paint. Might have to do with the albedo of the material I guess.

I heard they were going to add support for procedural, volumetric clouds in indigo?

A real environment is altering the overall reflected sky colour by obstruction/light bleeding
If indigo doesn't currently support this, is there any chance that it might in the future?
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Zom-B
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Re: sun/sky issue

Post by Zom-B » Wed Jun 29, 2011 9:09 am

neo0. wrote:If indigo doesn't currently support this, is there any chance that it might in the future?
Indigo is capable of such a sky!
The example you posted shows the "magic/golden hour" in a dusk or dawn scenario.
Simply lower the sun in Indigo to get a more reddish sky...
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Silmä
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Re: sun/sky issue

Post by Silmä » Wed Jun 29, 2011 11:43 pm

Zom-B wrote:
neo0. wrote:If indigo doesn't currently support this, is there any chance that it might in the future?
Indigo is capable of such a sky!
The example you posted shows the "magic/golden hour" in a dusk or dawn scenario.
Simply lower the sun in Indigo to get a more reddish sky...
Or just edit the color of the sky-layer.

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