Different exposure when rendering different parts of the image

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Sharlybg
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Re: Different exposure when rendering different parts of the image

Post by Sharlybg » Sun Nov 18, 2018 10:56 pm

Racleborg wrote:
Sun Nov 18, 2018 6:43 pm
Well, it looks great! So if it takes a month, then it takes a month ;)
Such kind of work totally deserve all the need to come to life. do it 4k with as much as samples possible it is a masterpiece. just remenber my simple cold fusion scene (but in my case i should had use laser to drastically reduce the time instead of hiden light plane inside box.
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FXtend
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Re: Different exposure when rendering different parts of the image

Post by FXtend » Mon Nov 19, 2018 9:47 am

Racleborg wrote:
Sun Nov 18, 2018 6:43 pm
Well, it looks great! So if it takes a month, then it takes a month ;)
Sharlybg wrote:
Sun Nov 18, 2018 10:56 pm
Such kind of work totally deserve all the need to come to life. do it 4k with as much as samples possible it is a masterpiece.
Thanks guys :)
I'll give it another month if I have to but I'd rather find out how Lux does gamma and fix my render if possible.
Sharlybg wrote:
Sun Nov 18, 2018 10:56 pm
just remenber my simple cold fusion scene (but in my case i should had use laser to drastically reduce the time instead of hiden light plane inside box.
I'm afraid I haven't seen your cold fusion scene but I'd love to. Do you think there's anything I could do about my scene to speed it up without compromising quality?

FXtend
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Re: Different exposure when rendering different parts of the image

Post by FXtend » Wed Nov 21, 2018 3:06 pm

Does anyone know how Lux does gamma? I mean, what's the maths? If it's just an exponent I must have done something wrong :?

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Dade
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Re: Different exposure when rendering different parts of the image

Post by Dade » Wed Nov 21, 2018 5:26 pm

FXtend wrote:
Wed Nov 21, 2018 3:06 pm
Does anyone know how Lux does gamma? I mean, what's the maths? If it's just an exponent I must have done something wrong :?
Here: https://github.com/LuxCoreRender/LuxCor ... on.cpp#L45
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B.Y.O.B.
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Re: Different exposure when rendering different parts of the image

Post by B.Y.O.B. » Wed Nov 21, 2018 6:08 pm

Did you render this in Blender or outside (using luxcoreconsole or luxcoreui)?
Because we don't use the gamma correction plugin in Blender, Blender does the gamma correction for us.
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FarbigeWelt
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Re: Different exposure when rendering different parts of the image

Post by FarbigeWelt » Wed Nov 21, 2018 6:41 pm

Does exr format support a kind of reset? I mean gamma, exposure and color space are rather a look up table for how the file has to be displayed and raw information is not touched.
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Re: Different exposure when rendering different parts of the image

Post by Racleborg » Fri Nov 23, 2018 3:50 pm

using luxcoreconsole or luxcoreui
Sorry to jump post, but how do you install these? I downloaded the standalone version, but can't see an .exe file in it.

Thanks

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Dade
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Re: Different exposure when rendering different parts of the image

Post by Dade » Fri Nov 23, 2018 4:10 pm

Racleborg wrote:
Fri Nov 23, 2018 3:50 pm
using luxcoreconsole or luxcoreui
Sorry to jump post, but how do you install these? I downloaded the standalone version, but can't see an .exe file in it.
https://github.com/LuxCoreRender/LuxCor ... opencl.zip includes a luxcoreui.exe and pylucoretools.exe :?:

luxcoreconsole is included only in the SDK version (as a demo with source) but "pylucoretools.exe console" does exactly the same task.
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Racleborg
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Re: Different exposure when rendering different parts of the image

Post by Racleborg » Fri Nov 23, 2018 4:14 pm

Dade

Thank you

FXtend
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Re: Different exposure when rendering different parts of the image

Post by FXtend » Sun Nov 25, 2018 6:23 pm

B.Y.O.B. wrote:
Wed Nov 21, 2018 6:08 pm
Did you render this in Blender or outside (using luxcoreconsole or luxcoreui)?
Because we don't use the gamma correction plugin in Blender, Blender does the gamma correction for us.
I did it in Blender. Thanks for the info :)
Should just be v^gamma or v^(1/gamma) where v is the value of the pixel, right? At least that's what the gamma node seems to do.

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