Discoball scene

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Discoball scene

Postby bratro » Sun Jan 08, 2017 4:53 pm

I'm trying to create a simple discoball, with reflections on the wall with one sharp spot light. Sounds pretty simple but I don't know how to achieve that ;-(

This is the look I'm trying to create:
(Discoball, spotlight & reflections on the wall)
Image

This is my current test scene:
Image

My Render Settings:
Image

Metalic material for the ball:
Image

My questions are:
- How to create a sharp spotlight with octane. (currently it's only a plane with a blackbody emission which gives light to the whole scene, but I wont it only on the discoball)
- How to make the reflections/caustic much more visible in the scene?
- In general, what settings should be changed? What should I do different?

The scene can be downloaded here:
https://dl.dropboxusercontent.com/u/58046849/octane/discoball-test.orbx

Thanks for your help!
bratro
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Re: Discoball scene

Postby whersmy » Sun Jan 08, 2017 8:50 pm

hi!
rendertimes get quite slow, PMC is the way to go.
used an ies spot light, which renders out slower but gives a good lighting definition!

I think the trick is to decrease the emitters` size, concentrate the lightsource, and just wait. First few samples nothing clears out, but after a while the reflections become visible. Perhaps to get even more out of it you could try an small plane emitter inside a open tube, that as well generates a nice concentrated beam of light.

GI clamp on 1000 leaves out most hotpixels, and adjusting the gamma brings out the reflections.
Attachments
Discodisco.png
discoball_v2.orbx
(3.26 MiB) Downloaded 9 times
mac pro g5| pentium g2030 iGPU| maximus extreme V| 2x gtx590 - 8gb - SSD - win7-x64- 1500W Silverstone|
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Octane render experiments
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whersmy
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Re: Discoball scene

Postby whersmy » Mon Jan 09, 2017 11:03 am

Let this one render out overnight to 32k samples, interesting scene!
Attachments
Discodisco_32k_samples.png
mac pro g5| pentium g2030 iGPU| maximus extreme V| 2x gtx590 - 8gb - SSD - win7-x64- 1500W Silverstone|
x201t - gtx580 - egpu ec
Octane render experiments
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Re: Discoball scene

Postby bratro » Mon Jan 09, 2017 12:15 pm

whersmy wrote:Let this one render out overnight to 32k samples, interesting scene!



AMAZING!

Exactly what I was looking for. Thank you so much for your help!
I definitely have to learn how to use these ies lights as I'm not at all familiar with it, but they seem very powerful ;-)
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Re: Discoball scene

Postby whersmy » Mon Jan 09, 2017 8:38 pm

Glad to help out! It`s just a standard .IES, you could try a distribution emitter as well.
greets!
mac pro g5| pentium g2030 iGPU| maximus extreme V| 2x gtx590 - 8gb - SSD - win7-x64- 1500W Silverstone|
x201t - gtx580 - egpu ec
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