Why exactly do large sensors have more dynamic range

Started 3 months ago | Discussions thread
Erik Kaffehr
Erik Kaffehr Veteran Member • Posts: 5,842
Re: Why exactly do large sensors have more dynamic range

HDRI wrote:

Erik Kaffehr wrote:

HDRI wrote:

JimKasson wrote:

JimKasson wrote:

Full well capacity per unit area has maxxed out at around 3000 electrons per square micrometer (3000 e-/um^2).

So if I understand right , the Z7 sensor tech at MF size would yield higher PDR than GFX at base iso ?

No,

You can deduce that the Z7 has higher SNR at the pixel level.

For PDR, you need to take the readout noise and the pixel count into account. The Z7 has larger pixels which means fewer pixels for any given size.

Hmm, I thought the rightmost column values are normalised to unit area (hence pixel size independent)

Yes, but FWC is the nominator of the equation. The denominator is a bit different as readout noise adds in quadrature.

To that may come that the sensors have a lot of tunable parameters.

Best regards

Erik

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Erik Kaffehr
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