Vue can handle entire Poser scenes in two ways
 - either it absorbs them and make them a Vue scene, with Vue objects and Vue materials
 - or it leaves it as a Poser scene, which means you're dealing with Poser via Vue, with Poser objects and the Poser materials tree.

Of source the latter runs two completely loaded apps in parallel so your machine has to be able to handle that (go 64bit OS/PoserPro/Vue and loads of RAM).
As can be expected, Vue materials are different from Poser, so things get lost in translation and recent additions are not supported (yet). For skins, which are quite sensitive to that, spacial products (Skin Vue) are on the market.

So generally, materials require a tweak while also all lights, cameras and atmosphers has to be re-setup aswell (these are not transfered anyway).

Vue is especially good in scenes under IDL-conditions, mainly with shiploads of vegetation in. As a result, it is quite faster than Poser for similar scenes, but scenes usually tend not to be similar (Poser cannot handle those volumes of trees etc).

But when you consider Vue for IDL-rendering only, there are good alternatives nowadays, which are cheaper, better and sometimes faster.
 - LuxRender (free), interfaced into Poser with Reality3 (a few tens of $). Not faster, required quite a serious machine.
 - Octane, interfaced into Poser with a special pluging (a few hundreds of $ with a free demo version), runs entirely in your nVidia (!) graphics card but can handle large images realtime (follow the Poser cam directly). That is, when you throw enough HW at it.

In both cases, high end results require that you tweak the materials and the lighting for those specific renderers.

Personally, I tend more and more to use Vue for vegetation-rich outdoor scenes, and one of the other solutions for portraits. For the time being that's the Reality/LuxRender route until I get the money for the Octane SW and a massive upgrade on my video cards.

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though