Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] Bug Reporting => [Max] Resolved Bugs => Topic started by: SharpEars on 2017-02-14, 20:32:48
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I am pointing out this one also, because this is critical and foundational information, especially for new Corona users:
When tweaking the output noise, the following suggestions are given at
What are the best render settings? (https://coronarenderer.freshdesk.com/support/solutions/articles/5000516729-what-are-the-best-render-settings-):
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If you are dealing with strong noise caused by direct light, increase Light samples multiplier
See: How can I tell whether noise comes from direct or indirect light? (https://coronarenderer.freshdesk.com/support/solutions/articles/5000516731)
If you are dealing with strong noise caused by indirect light (GI), increase GI vs. AA balance
See: How can I tell whether noise comes from direct or indirect light? (https://coronarenderer.freshdesk.com/support/solutions/articles/5000516731)
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The statement underlined is incorrect. Increasing the GI vs. AA balance will not affect the ratio of direct to indirect sampling per pixel. It may help slightly with both direct and indirect lighting, by marginally reducing the number of AA samples. The correct statement should be to decrease the Light samples multiplier which controls the direct/indirect ratio, thus providing more samples to indirect light by reducing the number of direct light samples (per indirect sample).
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Hi,
thanks for the feedback. Do you know that there is even easier way to report it? On the bottom of the article click "was this useful - NO" - another dialog will pop out with clarification, and you can submit it so Marcin can fix it diretly in the help desk
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Hi,
thanks for the feedback. Do you know that there is even easier way to report it? On the bottom of the article click "was this useful - NO" - another dialog will pop out with clarification, and you can submit it so Marcin can fix it diretly in the help desk
that way is good but posting it in forum imho sometimes is better than direct procedure like that. because users able to discuss it, others tells us which one is wrong or not wrong and another guys tells which better words to describe, with that way, improvements based on more numbers will be made easier but with a risk of rough biased discussion.
and I think this kind of report should be posted in another board, not in bug report.. but I don't know which board is right.
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Hi,
thanks for the feedback. Do you know that there is even easier way to report it? On the bottom of the article click "was this useful - NO" - another dialog will pop out with clarification, and you can submit it so Marcin can fix it diretly in the help desk
Good to know, I'll use that from now on.
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Sorry for getting to this topic so late.
Increasing the GI vs. AA balance will not affect the ratio of direct to indirect sampling per pixel.
True.
The correct statement should be to decrease the Light samples multiplier which controls the direct/indirect ratio, thus providing more samples to indirect light by reducing the number of direct light samples (per indirect sample).
There is no mistake in your reasoning, but:
1) It is better not to use lower values than the default ones, so I would rather advise to increase something, than to lower something else. We can image an inexperience user following this advice and lowering the LSM by half. He would then notice that there is still noise in GI, so he would lower it further. That could lead to some serious problems.
2) It will work anyway, since both GI and direct samples will be increased. We will simply end up with better GI and direct light quality within a lower number of passes rendered, which we are essentially after.
I am not going to update the text in that article, unless others believe it really is wrong. Maybe I don't see some more important problem here?
Replacing outdated screenshots is another thing. I have it on my todo for quite some time, but unfortunately there are more important tasks which I need to complete first. Updating screenshots is not as easy and quick as it sounds. ;)
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maru will finalize this
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Images updated. Case closed.