Arnold blurry textures


#1

hello

I’ve been using Arnold for a while but as Mental Ray, I have a serious problem with blurry textures.

I tried different filter type, but Arnold doc’s recommends Gaussian mostly with a value of 2.
I increased AA and other settings as well…

still no luck to get sharp and acceptable render.
please help.

thank u in advance


#2

That looks like normal blurring due to antialiasing? You can use a different filter type (like box) or reduce the filter width to try and sharpen it. Rendering the texture inherently means “resampling” the image so to speak, so a render of a texture will never be quite as sharp as the original file.


#3

thank you

by using lower width value, I’m afraid to get flicker or artifacts in animation.
am I right?
on the other hand changing the filter type doesn’t help a lot!

by the way, how should one compensate the quality drop down of this phenomenon ( resampl ing )?
by using higher resolution textures? higher render size?


#4

Did you only change the filtering in the render globals? I usually get sharp textures by lowering the filter settings on the file read node. Not sure if you tried this already but it is a suggestion.

Good luck!


#5

Print-level sharpness, and animation without flickering, are mutually exclusive. You’ll have to go to extremes in order to get both, and don’t be surprised if you have to sacrifice one for the other.

Gaussian-2 is recommended for animation that’s a 2k render, smaller would be less, larger would be more. I’ve never even heard of a print guy using gaussian, because it softens, where they prefer something that sharpens, like Mitchell.

I have had the same trouble, with a starfield map, what I do is to turn off filtering completely, and raise anti-aliasing / motion blur enough to compensate. Higher res always helps too, as long as the texture itself is higher res ( not just scaled up ).