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Hi,
I am trying to do plush cow rendering but my hairy version looks like is dirty. The only difference between those two models is displacement map...




And additional question, how to make surfaces appear darker / brighter w/o messing with bitmaps or sliders? Or it is just completely wrong to have bitmaps with 255,255,255 or 0,0,0 values and I need to re-edit them in Photoshop before I will be able to use them in Maxwell?

Hm, the "dirt" you see is probably shadows from the displacement "spikes".
If you use low displacement resolution (hard to see in your cow pic) the "spikes" might be rough and blocky, causing these shadows.
I did a test with a rather high disp.res. and didn't get the dirty look:

Mushroom by LarsMagnusson, on Flickr

About darker/brighter....not without touching any sliders. If you want to do slight adjustments on texture brightness, saturation etc, you could do it in the texture selection window ( the one where you open the texture when working on the material)

Personally I think it's just noise that hasn't cleared yet -- high displacement like this can take a long time to clear out the noise... also looks like the white is higher than RGB 225 which will increase noise as well.

Best,
Jason.

Hi,

maybe you can try to use SSS or thinSSS to reduce shadow intensity on the fur.

Victor

Thank you guys for answers, I think you both right - I am working on the solution.
Cheers!