dcraw fork with Pentax Pixel Shift support
All options are identical to the original at:
with the exception of:
-G 1-99 1 detects the lightest artifacts (1% change in green level) 99 detects only the largest artifacts (99% change) default is 100, artifact detection/repair disabled. -X highlight artifacts in the output. If -G is not set it is set to 20%.
dcrawps -X -G 20 -T input.dng
to get an impression of the level of movement in your DNG PS image.
You can find (Windows) binaries at: