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| p.5 #5 · MP wise, where's sweet spot on FF sensors... |
But you are ignoring read noise.
Ideally, read noise will scale with pixel size.
And indeed, smaller pixels typically have lower read noise than larger pixels.
The scaling is not perfect, though.
I wasn't ignoring it. In the FWC case the effect was negligible. And in the "noise floor" case, there was "only" read noise.
As has been said earlier in this thread, for ultra high ISO dynamic range, larger pixels are indeed better even at normalized resolution. Nobody questions that.