Another approach to working around this is as other people have been mentioning, set up smoothing groups, but the more complex the model, the more work that is. Since Poser behaves differently from pretty much everything else with how it applies phong shading, it's hard to predict exactly where these blemishes will appear, so a lot of trial and error may be needed.  Not saying one method is "better" than the other but for me, I'd rather not dick around with setting phong angle for these 5 polys and a different angle for those 8 etc.

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