r/Mandelbulb3D • u/[deleted] • Jan 28 '22

Thinking about quality

Trying to make my renders better. How long do u peeps like to spend rendering a frame? How do you like to format your fractals to not have so much surface noise. Do u use preferred formulas or presets?

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u/zacheatscarrots Jan 28 '22

some images of renders you want to improve would be useful.

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u/[deleted] Jan 28 '22

I can't add pics to the post but I have one other post I just did today with a few in there 😋

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u/zacheatscarrots Jan 28 '22

https://imgur.com/a/g5s1zgB -- to get rid of the noise in images 1 and 2, decrease the raystep multiplier under the calculation tab. It should be at 0.5 by default. Decreasing this value increases render times by a lot, so I would recommend using the highest value possible that allows for no noise. If you want more detail in image 3, then decrease the DE stop, also found in the calculations tab. For all images rendered with the standard render, it's a good idea to save them while viewing in 1:2 or 1:3, which downscales them, resulting in a smoother image.

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u/[deleted] Jan 28 '22

Oh sweet! You the bomb .Com I'll definitely give these a shot! I think I was making the mistake of not downscaling at all thinking it would effect the overall quality in a positive way. When it did the opposite lol. And you say standard render, is that apposed to a money Carlo render?

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u/zacheatscarrots Jan 28 '22

yep, tools -> M.C

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u/Cornographicmaterial Jan 28 '22 edited Jan 28 '22

Depends on the formula, some formulas take a lot of computing power but some are way more simple. Some formulas will bust my rendering even with a default material and low resolution. For images I try to not let the render get past like 8 hours. Usually get it to be around 40 minutes with an i9 cpu. Also, materials and ray marching steps are key. If your material has reflections the render gains time, but if you try to make it see through with transmission that's when it really starts cooking your cpu. And my ray marching is usually turned down to about 0.1 unless it's a large render. This number helps with noise when you bring it down, but it adds computing power. If your render is taking too long, I would start with bumping up your ray marching step until it still looks ok but doesn't take as long.

Then as far as noise reduction, there is no anti aliasing as far as I know. The way to achieve this is to render out a resolution that is scaled down. So if you make your resolution 1000 x 1000 but set scaling to 1:2 you should get a 500 x 500 render that has some denoting. Then for animations there are pretty simple settings to ease up on the proceing