Hi guys,
I have a scene which I lit with a Sunlight + HDRI (Mix Texture)
15000 samples with DL, Ray
Path Term: 0.15
Coherent Ratio: .5
I'm getting alot of noise on the darker area of the scene. Can anyone help me with it.
Grainy render
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Important notice: All artwork submitted on our public gallery forums gallery forums may or may not be used by OTOY for publication on our website gallery.
If you do not want us to publish your art, please mention it in your post clearly. (put a very red small diagonal cross in the left right corner of the image)
Any images already published on the gallery will be removed if the original author asks us to do so.
We recommend placing your credits on the images so you benefit from the exposure too, and use a minimum image width of 1200 pixels, and use pathtracing or PMC. Thanks for your attention, The OctaneRender Team.
For new users: this forum is moderated. Your first post will appear only after it has been reviewed by a moderator, so it will not show up immediately.
This is necessary to avoid this forum being flooded by spam.
Hi,
Use PT. Increase caustic blur, lower diffuse/spec depths and watch this video. https://youtu.be/HCrybjkcVtY
Use PT. Increase caustic blur, lower diffuse/spec depths and watch this video. https://youtu.be/HCrybjkcVtY
Octane For Cinema 4D developer / 3d generalist
3930k / 16gb / 780ti + 1070/1080 / psu 1600w / numerous hw
3930k / 16gb / 780ti + 1070/1080 / psu 1600w / numerous hw
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ansarwasif
- Posts: 9
- Joined: Wed Jan 27, 2016 8:37 pm
Thanks aoktar for the reply.
I tried what you mentioned, but still no luck with it. I'm attaching the scene if you have time please can you have a look at it. Much appreciated in advance.
I tried what you mentioned, but still no luck with it. I'm attaching the scene if you have time please can you have a look at it. Much appreciated in advance.
- Attachments
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- stairs.rar
- (13.82 MiB) Downloaded 302 times
Hi ansarwasif,
I had a look at your scene, and in my opinion, the most of the noise comes from the weak HDR used in conjunction with the physical sun, infact you have two suns working in the same scene. The HDR has low resolution and low dynamic. So, if you rise the gamma from 1 to 2.2 to get the shadows, then you are going to introduce a lot of noise. You would try to change the HDR with one downloaded from this site:
http://noemotionhdrs.net/hdrday.html
or use an emitter to simulate the secondary sun
ciao beppe
I had a look at your scene, and in my opinion, the most of the noise comes from the weak HDR used in conjunction with the physical sun, infact you have two suns working in the same scene. The HDR has low resolution and low dynamic. So, if you rise the gamma from 1 to 2.2 to get the shadows, then you are going to introduce a lot of noise. You would try to change the HDR with one downloaded from this site:
http://noemotionhdrs.net/hdrday.html
or use an emitter to simulate the secondary sun
ciao beppe
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ansarwasif
- Posts: 9
- Joined: Wed Jan 27, 2016 8:37 pm
Thanks alot beppe. I will try the HDRI. did not think of HDR could introduce grain.bepeg4d wrote:Hi ansarwasif,
I had a look at your scene, and in my opinion, the most of the noise comes from the weak HDR used in conjunction with the physical sun, infact you have two suns working in the same scene. The HDR has low resolution and low dynamic. So, if you rise the gamma from 1 to 2.2 to get the shadows, then you are going to introduce a lot of noise. You would try to change the HDR with one downloaded from this site:
http://noemotionhdrs.net/hdrday.html
or use an emitter to simulate the secondary sun
ciao beppe