Why exactly do large sensors have more dynamic range

Started 3 months ago | Discussions thread
JimKasson
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Re: Why exactly do large sensors have more dynamic range

Dan Wells wrote:

Why would the A7r IV have a lower per unit area FWC than the GFX?

Experimental error in my measurements? Different threshold nonlinearity? Sony’s calibration prescaling? All of the above?

I thought those two sensors were very, very closely related... I certainly see Jim's point about per-sensor FWC, but the per-area FWC shouldn't differ by 10% as far as I can see...

It also doesn't surprise me that the Z7 is unusually high per unit area - it has the low ISO settings - would the sensor modifications that enable ISO 64 also increase FWC?

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