Blacksmith3D, as mentioned above, can paint with photographic textures.

It's really a great program both for morphs and for textures. I have a little trouble with their newest version though so I'm still at Blacksmith3D version 2.2.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.