I only used the Polaroid X530 (which has a 1.5 MP 1/1.8"-Foveon-sensor & puts out X3F-files) for the photos of the buildings. Only the first two shots with the pyramid are from the DP2s. So there was no Fill Light processing in the X530-files, since SPP doesn't show advanced processing options from which to apply Fill Light when processing X3F-files shot with the X530. I could have used the supplied (very old) Polaroid Photo-Lab (Polaroid-branded version of SPP, supplied via the CD-ROM in the box of the X530), but I decided not to, because I just wanted to simply see what it'd look like as quick and easy as I could
The fill light in these looks to be pretty severe-- what setting did you use?
Foveon Monochrome pics - DP2s&X530 @ English Grounds of Hanau Wilhelmsbad (near Frankfurt am Main)