I've had a quick go with a number of images and it works very well in the right circumstances.
Wow you people get up early over in the UK. Don't you ever sleep.
When I got on here a while ago, boy, was I surprised, and pleasantly so.
I played for a while, (with Qimage Ultimate) and not only has the FILL been improved, but the HDR slider is a really nice tool.
Terry is right on the money. Oh I forgot! "Spot on" .
To simplify, when you have some shadow areas that need opening (lightening), but in doing so, your highlighted areas are losing detail (like lace work on a white blouse, or the folds in a man's white shirt (or the detail in the bright parts of Terry's top tier water), you can recall the detail with some judicious use of the HDR slider.
I wish Mike would have called it Fill Detail, or Recovery of Detail, because that's what it does.
Anyway, have fun redoing all your old images. That will keep you (Jeff-G) out of the pubs for a while! :-)
You do not need HDR on every image. So don't get carried away. But try it. That's how you get the feel of it.
Second caveat. Add too much HDR, and you can see the contrast flatten somewhat.
Have fun all you Ultimate people. (hey! We are UPs) Ultimate People!!
Fred