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Panasonic Lumix DMC-GF6 vs Panasonic Lumix DMC-GH2: read noise comparison

Panasonic Lumix DMC-GF6DxO

The Panasonic Lumix DMC-GF6 was measured at 9 ISO settings from ISO 160 to ISO 25600. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (160) read noise is 3.61 DN. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

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-GF6 vs Panasonic Lumix DMC-GH2 read noise table

ISOPanasonic Lumix DMC-GF6Panasonic Lumix DMC-GH2
1603.6051.945
2004.4082.378
250–2.789
320–2.532
4004.7243.160
500–4.028
640–4.228
8007.1115.315
1000–7.727
1250–8.168
160010.4839.918
2000–13.929
2500–17.268
320024.25119.427
4000–28.246
5000–34.535
640040.504–
8000–49.522
10000–62.683
12800103.25077.172
25600276.282–

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Data: Photons to Photos · © William J. Claff