This is a common problem with Poser figures -- largely due to the fact that Poser people are, after all, merely electronic mannequins. Poser figures look like the hollow imitations of real men & women that they are.

Personally, I try to use facial expressions to counteract this problem as much as possible.

Real humans have extremely "mobile" facial features -- features which constantly change in reaction to the world around them. By contrast, Poser people seem to frequently maintain a bland facial expression, regardless of what's happening in the scene......and that's one reason why Poser figures can look so unnatural.

As has already been suggested in this thread, merely turning the "smile" control up a notch or two won't do the trick -- the eyes themselves are vital to a realistic-looking facial expression. Wince, blink, brows up/down/frown/worry etc. can greatly add to the overall effect.

Pre-made commercial or free expression packs can help, too.

Have you ever seen a fake smile on a real person -- the type of smile that doesn't reach the eyes? Often a 'beauty queen' type smile, or else a smile from someone that's not actually being friendly will look this way.

Without adusting the eyes properly, you'll get the same sort of unpleasant effect from Poser figures.

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