In 4 (though I hear 5 can raytrace), items held close to a surface will need a little postwork tweaking to look right -- to paint on a little of the colour of surface they are close to. For instance, a chrome cylinder held against someone's bare right thigh (like a lightsabre on a belt), seen from in front, will have the skin colour on its left (where it's pressed aganist the thigh), but Poser 4 won't do this for you, so you'll have to add it in and blend it in in a paint program.