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Panasonic Lumix DC-GX800 vs Panasonic Lumix DC-GX9: read noise comparison

Panasonic Lumix DC-GX800DxO

The Panasonic Lumix DC-GX800 was measured at 9 ISO settings from ISO 100 to ISO 25600. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 0.47 DN. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Panasonic Lumix DC-GX9

The Panasonic Lumix DC-GX9 was measured at 25 ISO settings from ISO 100 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (200) read noise is 0.93 DN, or 3.4 electrons at the sensor. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 12800 don't change analog gain (digital push). Full well at base ISO is about 14,291 electrons; unity gain is around ISO 720.

Panasonic Lumix DC-GX800 vs Panasonic Lumix DC-GX9 read noise table

ISOPanasonic Lumix DC-GX800Panasonic Lumix DC-GX9
1000.4700.871
125–0.993
160–1.181
2000.8180.933
250–1.102
320–1.301
4001.2661.569
500–1.853
640–2.250
8002.3132.266
1000–2.676
1250–3.272
16005.3893.945
2000–4.857
2500–5.938
32008.0567.311
4000–8.938
5000–11.004
640012.12613.548
8000–17.509
10000–22.009
1280025.45727.665
16000–17.509
20000–22.316
2560059.71427.665

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Data: Photons to Photos · © William J. Claff