Control lights is one of the most important thing to do when you light a scene, but also if you separate each light in a different pass or render element is very useful to comp it later and tweak anything without re-rendering all again.
To address this in Vray, we can render each light as separate pass, we need to create an render layer and add the lights and set, geometry, etc.
create a new render layer.
As example I have a simple scene that I added five lights.
To have more flexibility in comp I want all the lights in different passes and not all in one RGB like this render:
There is a manual way to do this, assigning each light to a render element and link it, but it takes a lot of time and if you have a bunch of scenes to light, the practical way is to do it with a script.
Phyton script is available at the end of the page :)
This small script will do the job, you need to place in the render layer (this example city_SET) and add all the lights, run the script, if you need the specular pass there is that option too.
The script will create for each light a render element:
Now we render and will have all the passes:
From here we can comp in Nuke and add any light effect, color.
RGB render
Using the light passes to give some mood and color to the scene .
This way we make candles, torches, interiors and even characters, and have key lights, fill, rims, etc.. Is a better way to iluminate and has the flexibility to make changes in comp later.
Vray render elements documentation: https://docs.chaosgroup.com/display/VRAY3MAYA/Render+Elements
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3dsmax
- Nov 24, 2015 3dsMax, Usando Vray para iluminar personajes, parte 2 (Nuke)
- Nov 16, 2015 3dsMax, usando Vray para iluminar personajes, Parte 1
- Nov 6, 2013 Rendeo en red con 3DsMax
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Maya
- Feb 25, 2018 Multi Matte in Maya using Vray
- Mar 11, 2017 Vray Lights to render elements
- Mar 8, 2017 Baking GI with Vray
- Jul 29, 2016 Obj Maya Clipboard
- May 26, 2016 Maya to Nuke obj script
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nuke
- Nov 5, 2018 Nuke Character ramp gizmo
- Aug 3, 2018 VelocityBlender noise reduction technique.
- Mar 11, 2017 Vray Lights to render elements
- Mar 6, 2017 Easy frame checker for Nuke.
- Nov 2, 2016 métodos básicos en Nuke.
- May 26, 2016 Maya to Nuke obj script
- Feb 20, 2016 Random Grade in Nuke
- Dec 6, 2015 Nuke VectorBlur.. añadiendo desenfoque de movimiento en post.
- Nov 24, 2015 3dsMax, Usando Vray para iluminar personajes, parte 2 (Nuke)
- Apr 10, 2014 3DsMax ID to Nuke Gizmo
- Nov 27, 2013 Scatter Pixels for Nuke
- Aug 8, 2013 Rotoscopia básica en Nuke
- Jul 15, 2013 Fast Marker Removal gizmo for nuke (update version)
- Jul 5, 2013 Rotobot 2.4
- Jul 5, 2013 Pasos básicos en Nuke