it is not important to do.

if you have blurry textures in poser 7 you should lower your "min shading rate" in your render settings.

In poser 6 this blur was commonly caused by texture filtering but they changed the way poser handles texture filtering and they moved the texture filtering into the individual material zone.

 the biggest problem is that they also set the default 'min shade rate" to 1.0 (perviously 0.2 i beleive) in poser 7. Many people didn't pay attention to this setting and assumed that texture filtering was the problem.

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