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Please save me some guesswork. Looks like I can build my own light probes
now.
Is that correct?
How bright should I make my light sources or emissive finishes?
Can I use hdri image maps to produce an hdri image?
-Shay
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> Please save me some guesswork. Looks like I can build my own light
> probes now.
>
> Is that correct?
> How bright should I make my light sources or emissive finishes?
> Can I use hdri image maps to produce an hdri image?
>
> -Shay
Yes, you can.
If you use a fisheye camera, it will look roughly like the circular
light probes. Use an angle of 360 and a 1:1 aspect ratio.
Using a spherical camera, an angle of 360 and an aspect ratio of 2:1
gives you a latitude-longitude rectangular image. The resulting image
can be used directly for a sky_sphere or on a sphere using map_type 1.
You don't need to go over board with the brightness.
Use look_like for the light_source.
For emissive objects, just set them to how bright they are suposed to be.
You compose your scene normaly and can use all features normaly,
including the use of HDR image_map.
The only change is that you don't need to wory about oversaturated areas
as much.
Alain
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Thank you.
"Alain" wrote in message news:51a518e4@news.povray.org...
> Please save me some guesswork. Looks like I can build my own light
> probes now.
>
> Is that correct?
> How bright should I make my light sources or emissive finishes?
> Can I use hdri image maps to produce an hdri image?
>
> -Shay
Yes, you can.
If you use a fisheye camera, it will look roughly like the circular
light probes. Use an angle of 360 and a 1:1 aspect ratio.
Using a spherical camera, an angle of 360 and an aspect ratio of 2:1
gives you a latitude-longitude rectangular image. The resulting image
can be used directly for a sky_sphere or on a sphere using map_type 1.
You don't need to go over board with the brightness.
Use look_like for the light_source.
For emissive objects, just set them to how bright they are suposed to be.
You compose your scene normaly and can use all features normaly,
including the use of HDR image_map.
The only change is that you don't need to wory about oversaturated areas
as much.
Alain
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In article <51a50a02$1@news.povray.org>, "Shay" <non### [at] none com> wrote:
> Please save me some guesswork. Looks like I can build my own light probes
> now.
>
> Is that correct?
> How bright should I make my light sources or emissive finishes?
> Can I use hdri image maps to produce an hdri image?
>
> -Shay
Some samples in the demos folder of MegaPov.
--
klp
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