Noise in Mental Ray render

[joostbos]

Hi,

I have very annoying noise in my MR render and can't figure out how to get rid of it. Found some posts on the area, but that didn't help, searched on Google but also those results didn't help.

http://forums.autodesk.com/t5/shading-lighting-and-rendering/noise-and-light-speckless-in-my-render/...

http://forums.autodesk.com/t5/3ds-max-3ds-max-design-general/3ds-max-noise-in-my-renders/m-p/4261265...

http://daniel3dwork.blogspot.nl/2013/07/noise-in-mental-ray-render.html

Some point to material settings, some point to Photometric light setting, some point to render settings, so I'm lost.

I tried increasing the light levels since I think I once found that very low levels cause noise, also didn't help.

So I hope someone can point me in the right direction. The noise is evident in the photographs, the sculpture on the right and in the CD covers.

Thanks.

[Anonymous · Accepted solution]

The noise in the photographs and the scultpure looks like low glossy samples.

One way to solve this, would be to increase glossy samples in your arch and design material.

Or if you are lazy, you could just increase your unified sampling quality.

Concerning the photographs: Is there some sort of glass material in front of the actual photograph? I would just make it perfectly specular (reflection glossiness and refraction glossiness -> 1.0).

[joostbos]

Thanks!

I played around with the glossy samples and it did make a difference, but I couldn't get rid of the noise completely, so I decided to set the reflectivity and glossiness to 0 in the end.

The photographs don't have glass in front of them, but the A&D material itself had a setting of 0.3 for reflectivity and glossiness, to simulate a kind of semigloss photopaper.