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Panasonic Lumix DMC-GH2 vs Panasonic Lumix DMC-GH3: read noise comparison

Panasonic Lumix DMC-GH2

The Panasonic Lumix DMC-GH2 was measured at 19 ISO settings from ISO 160 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (160) read noise is 1.95 DN, or 5.7 electrons at the sensor. From ISO 1250 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 11,867 electrons; unity gain is around ISO 460.

Panasonic Lumix DMC-GH3DxO

The Panasonic Lumix DMC-GH3 was measured at 7 ISO settings from ISO 125 to ISO 6400. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (125) read noise is 1.03 DN. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Panasonic Lumix DMC-GH2 vs Panasonic Lumix DMC-GH3 read noise table

ISOPanasonic Lumix DMC-GH2Panasonic Lumix DMC-GH3
125–1.028
1601.945–
2002.3781.257
2502.789–
3202.532–
4003.1601.840
5004.028–
6404.228–
8005.3153.630
10007.727–
12508.168–
16009.9185.736
200013.929–
250017.268–
320019.42710.339
400028.246–
500034.535–
6400–21.407
800049.522–
1000062.683–
1280077.172–

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Data: Photons to Photos · © William J. Claff