As it turned out, my above report of a "bug" was baseless. Unlike other software, FastRawViewer simply rounds off its display of GPS coordinates to the nearest second of arc, so relatively small displacements less than on the order of 100 ft may result in the display of apparently identical locations. Support has informed me this roundoff is by design and has provided reasons.
I found out that FastRawViewer actually does record GPS locations to higher precision than that displayed. Just click on the coordinates' live link in the EXIF panel. When Google Maps pops up, it shows both the location on a map and a display of FastRawViewer's coordinates to the nearest 0.1". Those coordinates are in exact agreement with the values displayed by other software.
As it turned out, my above
As it turned out, my above report of a "bug" was baseless. Unlike other software, FastRawViewer simply rounds off its display of GPS coordinates to the nearest second of arc, so relatively small displacements less than on the order of 100 ft may result in the display of apparently identical locations. Support has informed me this roundoff is by design and has provided reasons.
I found out that FastRawViewer actually does record GPS locations to higher precision than that displayed. Just click on the coordinates' live link in the EXIF panel. When Google Maps pops up, it shows both the location on a map and a display of FastRawViewer's coordinates to the nearest 0.1". Those coordinates are in exact agreement with the values displayed by other software.