Figure 14-22: Close-ups from Figure 14-20. If things are moving (even if the camera isn’t), it will sometimes show up as a double-image in HDR. Here, the wind was blowing, resulting in these classic HDR double-image artifacts. Not so with DRO! The lower figure shows the other tradeoff: DRO tends to add considerable noise (especially in the dark parts of the image), whereas HDR tends to smooth it out.