Euclid is the right approach, but bear in mind that the main and aux cameras (in P4) are offset by a value of +1.0 Poser units in the z axis, which will need to be added to the z coordinate. ie. as if the x,y,z values refer to the position of an invisible tripod at the centre of the screen (where the default figure is usually loaded) and the camera is mounted on a boom, and facing back towards the centre. This is further confused by the fact that the scale attribute seems to apply directly to the boom/camera setup. Also P5 supports multiple units. Best experiment with a few props and camera settings to get the hang of where the camera really is, or use the dolly camera which has a simpler geometry, but Python is still probably the best way to implement this. Bill