Reflection question

Newtek Lightwave 3D (exporter developed by holocube, Integrated Plugin developed by juanjgon)

Moderator: juanjgon

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Builtdown
Licensed Customer
Posts: 216
Joined: Thu Sep 04, 2014 2:21 pm

Hi,

I would need some tips.
I have made an interior that has lots of lights and some reflective surfaces. Problem is that whatever I do I don´t seem to get nice clean reflections. Light reflections are all pixelated and bad looking. (See attachments.)
I used the wine glass spot as an example.

I think I have good render attributes but maybe there is something that I dont know about:

1. Wine glass is well Subdivided (200.000 polys)
2. Hot Pixel visibility 20%
3. Path Tracing
4. Max Samples 8500
5. Diffuse and Glossy depth 26
6. Caustic blur 90%
7. GI clamp 10

What should I look next?



Thanks!
Attachments
Question_2.jpg
Question_1.jpg
Builtdown
Licensed Customer
Posts: 216
Joined: Thu Sep 04, 2014 2:21 pm

Hi Elsksa,

I went through the link you sent and did a lot of testing. None of the tips made a lot of difference.
Adding a lot of samples helped. With ~25.000 samples the result started to be pretty good. (I know that so many samples is not a good thing.)

But I think the DOF is the big reason of those "unresolved spots". Without DOF it looks good almost right away.
Problem is that I want the DOF "look".

Is there any tips about DOF quality regarding to my case with those unresolved areas?


Thanks,
Builtdown
Licensed Customer
Posts: 216
Joined: Thu Sep 04, 2014 2:21 pm

I still think I did everything right and no bokeh map.
But good that you mentioned changing kernel. Because that was what really worked!

PMC kernel did exactly what I was looking after. I have never used PMC with interior pics but now it seemed to be the answer.
I attached some examples with bad PathTracing result and PMC result with approx. same time rendering.
Attachments
PMC_2.jpg
PMC_1.jpg
Builtdown
Licensed Customer
Posts: 216
Joined: Thu Sep 04, 2014 2:21 pm

Thanks for the tip.
I wasn´t using Denoiser. Now with it it definetly made it look better.


PMC still more realistic but takes much more time compared to PT+Denoiser.
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