help needed: strange black facets when rendered in Poser - this is my first ,odel, created with C4D - exported as OBJ file. when i import the obj file into poser and do a render it looks fine (left object) - after i saved the object into the poser library and load it and do a render, than i find those strange black facets. in the preview it looks fine. i checked it with UV mapper (no degenerated facets found) - remapped the whole thing in UV mapper: with same result. does anybody know what's wrong with it ...?

What version pf Poser do you use? P4, PPP or P5? In P5 there might be a problem with doublesided polygons (two polygons in the same place). P5 gets in trouble deciding which side is forward. You can apply a slight displacement (very slight 0.01 or so) in the displacement slot. Mybe it cures the problem - maybe I'm totally wrong :-) Willy

could you show the wireframe mesh from the same camera angle? If the polygons in that area are quads, then you have a non-planar quad with a concave profile. That can be cured by triangulating the mesh. If you are getting this on a mesh that is already triangulated in that area then it might be a degenerate polygon, co-planar polygon or back-facing polygon.

If you use P5, try to uncheck the "remove backfacing polygons" option in the render settings.

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Another potential cause can be reversed normals in the model. Check in C4D if that specific polygon face is pointing the wrong way to the rest.