Quote - Take a look at my old Posing to Dolly script.  I don't think it's exact, but it might give you a starting point. http://ockhamsbungalow.com/Python/PosingToDolly2.zip

Will do, once I'm back on my own computer. I guessed somebody might have already done this.

Quote - Why do you want to do this?

I wondered if anybody would ask! It's to let me get the start/end distances for the atmosphere depth cue. I always find that I'm using the Main or Aux camera when I find the view I want, and unless the nearest/furthest points of the figures/props are close to the centre of the camera view or on the diagonals (i.e. the X-shaped Focus Distance Guide intersects them) I can't judge. And if I adjust the orientation of an orbiting camera to point at the near/far part then the camera moves and the measurement's invalid.

Moving the dolly camera to the position of the orbiting camera I'm using seemed an obvious solution, as I could just adjust Pitch/Yaw to point at the bit I want...

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The 3Dcheapskate* occasionally posts sensible stuff. Usually by accident. And it usually uses Poser 11, with units set to inches. Except when it's using Poser 6 or PP2014, or when its units are set to PNU or something else.
*soon only to be available in two flavours -  DAZ and Renderosity