Question: what are you defining by dynamic range? The 5D3 had much better higher ISO noise than the 5D2, and the 1Dx had better again, but all three had similar low ISO DR. See here https://www.dxomark.com …-5D-Mark-II___795_753_483
and select Measurements, Dynamic Range.The 5D4 annihilates the 5D3 and original 1Dx for low ISO DR, and gets fairly close at higher ISOs: https://www.dxomark.com …on-EOS-1Dx___1106_795_753
In fact, it's pretty competitive with the 1Dx2 across the board: https://www.dxomark.com …-Mark-III___1106_1071_795
Thanks. I recall that the lack of equivalent dynamic range in MY (two cameras tested) 5D III was across the board. The range from dark shadow to bright whites that could be captured in an image. Not how recoverable they are, but the levels of brightness range. I recall someone somewhere saying it was 10 bit in 5D II and maybe 12 bit in other bodies? Sketchy on that.
I found 5D II to be superior as well as 6D in this single regard to the 5D III. Obviously there were more benefits to the II over those two cameras, but DR and heavily weighted evaluative exposure to the focus point (as I am fond of focus and recompose) did not work for me. My 1D X has not been an issue in either regard. I would love to upgrade my 6D if the IV also does not have these issues. Most here are saying it does not.
~Bob
