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Canon PowerShot G9 X vs Canon PowerShot S100: read noise comparison

Canon PowerShot G9 XDxO

The Canon PowerShot G9 X was measured at 8 ISO settings from ISO 125 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (125) read noise is 4.63 DN. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Canon PowerShot S100DxO

The Canon PowerShot S100 was measured at 8 ISO settings from ISO 80 to ISO 6400. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (80) read noise is 1.55 DN. From ISO 3200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Canon PowerShot G9 X vs Canon PowerShot S100 read noise table

ISOCanon PowerShot G9 XCanon PowerShot S100
80–1.548
100–2.313
1254.627–
2006.3202.888
40010.7034.993
80018.8967.062
160034.53512.042
320064.89317.630
6400131.59974.028
12800261.379–

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Data: Photons to Photos · © William J. Claff