Originally posted by fromunderthebridge I can confirm that pixel-shift does not work properly on PS CS 6 (13.0.1) and CR 7 (9.1.1.461). Based on my tests I'm not even sure the software handles more data than just the first embedded frame (I may be wrong though).
The 'right' workflow for pixel-shift seems to be currently DCU -> 16bit tiff -> PS. I can also confirm that based on my tests the subject has to be completely still (at least for close-ups, no surprise there), no wobble and camera on tripod. Motion correction does eliminate movement pretty well, but if subject moves you gain nothing. Also, for some edge cases the MC does not eliminate all pixel shift artifacts (not sure about the specific circumstances).
EDIT: by still I mean very difficult outdoors as the slightest wind throws off the pixel shift for flowers and such. Haven't tested with open landscapes, probably works better there.
I think you're incorrect.
If ACR didn't use all four images, you wouldn't see the blurs/artifacts you do see. If you use something to pull the four frames you'd see smaller light trails in each image as well; the length of the boat and the headlights are sort of like timers (notice how PDCU chopped out the curve in the headlights of the turning car for example).
Furthermore, you can't see much improvement with PS in ACR/Lr until you increase the sharpening significantly (and depending on what you do, obviously contrast, detail and other adjustments have to be used to discern the increase in resolution).
For those of us who like to use RAW, using PDCU isn't right. It can remove some movement, but it's a blunt instrument, and I for one find it atrocious to use. And I prefer raw and old fashioned retouching to fix the movement (although as you note, some movement like a little camera shake pretty much ruins the whole shot no matter what you use).
I'm awaiting a tool like some HDR programs that let you adjust ghosting control. You could remove variable amounts of movement. You may not need the higher resolution in lots of parts of your image. Many sample shots I see are landscapes, but if you're shooting a subject close and just want nice bokeh in the background zapping out the moving leaves there and leaving a lower resolution is fine.