When it comes to Camera & Director POVs, I always set the camera first,and then use the director POV to walk through the scene and set stuff up when I need a viewpoint shift to get things right.  Don't forget the "Top, Side Bottom" types of views to really help line up stuff accurately.  It will improve your control over the scene immensely.

Also, once you have your camera positioned the way you want it, use the save dots to make sure you can always snap back to this if you make a mistake and move it.  I have one picture "Trainspotting" that I can't do a repost of because I set it up backwards and saved the dots wrong. :c(  I'd have to do it over from the start.  Hmmmm maybe not a bad idea either knowing what I know now.  Oh great, now I gave myself another idea for a picture. Sigh.....  Anybody know how to create hobos or get hobo clothing in Poser?  

mdb