Thanks for the test, Michael. I'm glad you ran the test.
Given that you lifted the shadows, I think that can explain why they look brighter on the D750...there IS a lot more dynamic range to be had there. In my experience, lifting Canon shadows looks exactly like your Canon results, where as lifting A7r shadows look exactly like your D750 results.
I do think that showing the entire wedge, from the highlights to the shadows, both unprocessed as well as processed, and including the settings you used to process them, would help provide a more balanced review. It should head off the most predictable of human responses (which is quite prevalent on these forums) as well. ;P
Anyway, looking forward to seeing the full step wedge in both OOC and processed versions.
I see what you are saying here. Its black and white to me, but without showing what I am actually doing and how I am trying to get these 41 calibrated steps all in one shot, I can see how it would be confusing. Im out shooting now, Ill post something tonight to show how I am clipping off that first step in RAW, and then squeezing everything I can out of the shadows.
I know some people believe this is not useful or not a DR test, but I think the results are pretty obvious. If you have a better solution or idea, I would still love to hear it.