Gradient, I knew there was some reason  and I thank you for bringing that to light.   Obviously, one raw cannot capture the range of + or - 6 EV total exposure.

In my meger experiments, I will take one off hand shot with what I consider a decent exposure. From that, I consider that the "center shot" then use shutter to vary EV up and down from that shot. I am sure the original starting point has a lot to do with the final result.  For example, my first image in previous posts could have been one stop higher to start.  Then again, I had to delete one shot from the HDR since highlights were too bright! Go figure.  

I am only learning this stuff and unfortunately do not see a decent way of presenting the final image as it should be seen except in print...and that capable of much higher dynamic range than we are used to in general prints of photos.      The print business is an entirely different ballfield...one on which I have not played enough to be more than a helper on the sidelines.

Tom