Thanks to DT for the 50 iso raws. After downloading and really going over the seashore shot, the results are both interesting and impressive.
The seagulls in flight are gone, as are the objects (foam cluster) on the water in the averaged shot. The color appears more pleasing to the eye also. As for noise, yes, the darker cliffs do show better in the frame averaged shot, however what catches me eye is the fact of how much more shadow gradient is available. The noise is less also, but the shadows show more color if that is possible. The water also takes on a more pleasing color but not sure that was something done in post. Adding a bit of sharpening with Topaz really pulls the darker cliffs out for more details, and no noise.
The sky, clouds and blue are both much more pleasing in the frame averaged shot.
This subject is pretty static, no trees no leaves moving. Only the gulls and they are taken out. I do wonder however what the effect would be in one of my average 1 second to 10/20 shots where tree/leaves are moving. In the past, I have pushed ISO up to 200/400 to allow for a faster shutter speed in the 1/125 to 1/500 range to stop the motion of the leaves, then go back to ND's to allow for the longer shutter speed to slow down water. It will be interesting to see if this tool can work with a tree with leaves in motion or if those leaves will just disappear? like the gulls did. If that is the case I can still see using the tool to pull up shadow details in parts of the image, then blend the averaged image back to another image in post.
Sunrise, Sunsets with very little wind, this tool would really be opening some doors for sure, especially is the scene has a lot of static subject matter like in the examples.
Paul C