Exactly like a fresnel lens would operate?
I know a few renderers that gave this option, and it really adds a lot to the realism, photo-realism.
https://www.youtube.com/watch?v=x4Smiy5Hn8s
I tried with an alphamap on the opacity of a lightplane, so the edges get less opacity and you get more soft reflections, but it doesn`t concentrate the light.
Also changing the distribution doesn`t help much.
Ciao
Is there a way for more concentrated light
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Octane 2022.1.1 nv535.98
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x201t - gtx580 - egpu ec
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- itsallgoode9

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have you tried buying a fresnel lens hdri and see how that works? combining that with the light falloff parameter might work.
ghm, have You tried using .ies files for distribution?
- Rikk The Gaijin

- Posts: 1528
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I was thinking the same as glimpse, IES lights will do the trick.
I`m on it.
Octane 2022.1.1 nv535.98
x201t - gtx580 - egpu ec
Dell G5 - 16GB - dgpu GTX1060 - TB3 egpu @ 1060 / RTX 4090
Octane Render experiments - ♩ ♪ ♫ ♬
x201t - gtx580 - egpu ec
Dell G5 - 16GB - dgpu GTX1060 - TB3 egpu @ 1060 / RTX 4090
Octane Render experiments - ♩ ♪ ♫ ♬
ies scaling controls the effect
https://support.solidangle.com/display/ ... tric+Light
https://support.solidangle.com/display/ ... tric+Light
3090, Titan, Quadro, Xeon Scalable Supermicro, 768GB RAM; Sketchup Pro, Classical Architecture.
Custom alloy powder coated laser cut cases, Autodesk metal-sheet 3D modelling.
build-log http://render.otoy.com/forum/viewtopic.php?f=9&t=42540
Custom alloy powder coated laser cut cases, Autodesk metal-sheet 3D modelling.
build-log http://render.otoy.com/forum/viewtopic.php?f=9&t=42540
Yep, awesome! I think it works.
Octane 2022.1.1 nv535.98
x201t - gtx580 - egpu ec
Dell G5 - 16GB - dgpu GTX1060 - TB3 egpu @ 1060 / RTX 4090
Octane Render experiments - ♩ ♪ ♫ ♬
x201t - gtx580 - egpu ec
Dell G5 - 16GB - dgpu GTX1060 - TB3 egpu @ 1060 / RTX 4090
Octane Render experiments - ♩ ♪ ♫ ♬