have a problem after transfer of an object from CInema to Poser, whilst i dont think its related to the object.
As you can see in the sample there are material errors at the end of the mapping. No idea why. Its a simple plane with rounded edges, however, i cannot get this away. I dont use AO or so, there is a simple light in the scene... Any ideas?
Have already tried to lower th sample rate to 0,01, no change.
The only thing is that i can set the bump rate to 0, than its gone. Even with 0,001 its there.

thanks!

Is there some bump or displacement in the material?
And do you have shadows on for the light?
I think what you are seeing there is self-shadowing on the surface.
If so, you should be able to eliminate it by increasing the Shadow Min Bias slightly (on the light Properties tab).

Hi SiaoShi

yes, there is a bump map, however i checked again and the edges there are very clear.
I tried setting the shadows to OFF, no change....

Thanks!

A sharp bump map won't prevent self shadowing if the bias is too low. In fact it may make it worse.

But you even get the artifacts with shadows switched off? Hmmm.....

What about the geometry of the object? How about ticking Remove backfacing polys in the render settings? Make any difference?

Oh sorry, I missed that bit about bump in your original post... I think you put it in after I posted. Sneaky! :O)
I'm a bit lost with this one then. Is it the same if you move the camera in close? Or if you switch texture filtering on/off? Those are other things I would also try.

Thanks IsaoShi :) ... i tried a close up render and it looks that the texture on other objects (Like here the door) is very dizzy as well. I thought i could be a JPG problem so i did the texture in TIF, same problem. I played around with the filtering. No change, changing it to "Fast" or "Quality" makes it worse!
Could it be thats because the Image is 4500*4500 Pixels?

Well i can say its not the size. I resampled it to 2500x2500, no difference

Other ideas that occur to me:
Try switching off smooth polygons for the object, in case it is interfering with the bump on the curved parts of the geometry (where the artifacts are worst).
The bump map is very high contrast, which would produce some big normal shifts at the points of transition between white and dark grey. I would try reducing the contrast of that a little (using texture strength on the image node) or perhaps using a slightly blurred version of the map.
Also, I would try plugging it into Displacement instead of bump, to see if it does the same thing. I"ve found displacement produces more consistent results than bump for a tiling texture I've been working on.
You may well have been there, tried all that already.... :O)

It's Friday evening and all the real experts are out stoking up their barbecues. Selfish gits, leaving us to grapple with these things all by ourselves. :O)

(edit) You fixed it --YAY!!

 Poser doesn't like long, thin polys. Good you found it.

Yeah Bantha, thats unfortunately very true. I contiounously stumble across this. HOwever, i found another problem to fix: When importing the standard shading rate on an object is 0,2 which overrides the render settings. So when setting this to a lower rate, the errors where completly gone.

Thanks all for your help.