Print at Dec 16, 2025, 4:23:17 PM

Posted by hansmex at Sep 29, 2011, 9:01:47 AM
Re: Small black square "dots" on high quality renderings
Cristian,

You may want to read this post for info on how to share pictures and or files.

As to your rendering problems:
- The forum has 18 posts/threads on "white spots" and 10 on "black spots". They may offer some insight in the problem.
- Q1 and Q2 rendering depends on hardware, and your video card may influence results. Q3 and Q4 rendering depends on software and should produce identical results, even between different computers.
- Ubuntu is fine, I'm using it myself with no more (or less) problems than people using another OS.
- Q3 uses a different rendering routine than Q4, so apart from a difference in the quality, there may be difference in the general appearance. Hence black spots in Q4 and not in Q3.
- You may want to experiment with the settings of the afflicted (furniture) models. Changing between Unchanged, Matt and Shiny may (or may not) solve the problem.
- You may want to use Q3 (which doesn't have the spots) and make an extra large rendering, which you then reduce in size to obtain the same quality as a Q4 rendering.
- You could share your design, so we could have a look at it and see if we can reproduce, isolate, or solve the problem, and/or offer a workaround.

Hans
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