If you’ve played around with the camera shake reduction feature in Photoshop CC, you might have noticed it works best with decently lit still camera images having low noise. The following types of still images are particularly suitable for shake reduction:
- Indoor or outdoor images captured using a lens with a long focal length
- Indoor images of a static scene taken with a slow shutter speed and no flash
In addition, shake reduction can help sharpen blurred text in images affected by camera motion.
Here’s the documentation for the feature.