@NCAndy, so when comparing 2 cameras, the farther up the worse the electronic read noise? That can't be the case either, because plugging in different cameras I am familiar with, the results don't match my or the industry's findings. For example the 50D and the 1DX2 are close to the same curve...
I don't know how you can use this site to compare 2 different cameras, other than to figure out where you have horizontal lines for ISO-less ranges.
