In most cases, you should test render
a file texture in Render View when filtering
because you may not be able to see the results in the views or in Attribute
Editor swatches.
When bump mapping, set Filter to
a low value (under 0.1). Filter is primarily used for anti-aliasing
textures—distant surfaces are blurrier. This may cause
a bump map to become smoother when further away. If you want the
bumps to be smooth, use a small Filter Offset value
for a constant blur.
To fix a noisy procedural texture that
appears to shift and swim during an animation
Do any of the following:
Increase the Filter and,
or Filter Offset values to achieve
a slightly blurred effect and reduce the sharpness that causes the
swimming.
Create a file texture (see
Convert a texture or shading network to a File Texture in
the Shading guide), then increase the Filter and,
or Filter Offset values to achieve
a slightly blurred effect and reduce the sharpness that causes the
swimming.