Pentax Pixel Shift is a fantastic feature when it comes to boosting the dynamic range, increase the level of detail and reduce the noise in an image. Many product photographers employ this feature for increased detail, but it can also yield great results for landscape photography. That said, the technology still faces some challenges when there is motion in a scene.
Now, Lightroom can handle Pixel Shift images, but it’s really lost even with the slightest blur. Think moving foliage for example. Pixel shift technology captures four images, so it takes the camera four times as much to take an image. This can add up to quite a bit of movement. Both Silkypix and RawTherapee have developed an algorithm to deal with movement. RawTherapee is even free. If you have the time, RawTherapee does a fabulous job with Pixel Shift and motion, but it has a steep learning curve.