On the primacy of exposure

Steve Throndson wrote:

To bobn2,

Sorry, my attention span is only this long --> <--

If you've got something to teach us, please give it up. Your number five image ​seems​ to have slightly more contrast in the mid range while the shadows are a bit lighter. It's very subtle. The bigger difference between the six frames is the colour. Were the originals different, or is that a result of your adjustments in 'RPP'? (not sure what that is) (raw post-processing, perhaps?)

And I'm not sure what you meant by this in your OP:

"Exposure settings are 10.5EV, 13.3EV, 14EV, (twice), 15EV and 15.6EV. So over a five stop range of exposure."