Well, I've tried this and it works well. All I did was set up the scene with a 'Point At' modifier for the camera pointing at a Target Helper Object which I positioned in the centre of the scene (the 'focus' of the camera). Then I switched to the end of the timeline and moved the camera a little. Rendered out two 'current frame' images from the start and finish positions and put them together in StereoPhoto Maker. Using the 'Point At' modifier and moving the camera in Top view means you don't have to worry about lining up your images. If you find you've moved the camera too far just render an earlier frame.