I know I'm getting some sharpness loss in the scans from the curl of the film and the fact that I don't have 35mm Betterscanning film holders - I'm just using the Epson holders. But yes, I did focus shift - that was part of the reason for getting the RTS III - all the Contax prime lenses have the focus compensation mark on the barrel. But there is a huge difference in the image quality between the pano shot and the standard 35mm shot that may not be as apparent from the JPEG files as it is when viewing the hi-res scans. I'll re-scan them and post again at higher resolution so you can see better what I mean.
As to exposure, I set the meter at 800, shot through a Hoya RM72 filter, and tried not only exposing on auto, metering through the filter, but also manual exposure using someone's suggested 1/125 @ F11 or thereabouts (I forget what it was now, but it was fresh in my mind at the time I shot). The 1/125th exposures were super-thin and obviously wrong. The auto-exposed negs look pretty good from an exposure point of view.