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Panasonic Lumix DMC-GF1 vs Panasonic Lumix DMC-GF3: read noise comparison

Panasonic Lumix DMC-GF1

The Panasonic Lumix DMC-GF1 was measured at 16 ISO settings from ISO 100 to ISO 3200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 4.03 DN, or 14 electrons at the sensor. From ISO 200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 14,148 electrons; unity gain is around ISO 350.

Panasonic Lumix DMC-GF3DxO

The Panasonic Lumix DMC-GF3 was measured at 7 ISO settings from ISO 160 to ISO 6400. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (160) read noise is 4.50 DN. From ISO 400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Panasonic Lumix DMC-GF1 vs Panasonic Lumix DMC-GF3 read noise table

ISOPanasonic Lumix DMC-GF1Panasonic Lumix DMC-GF3
1004.028–
1255.063–
1606.3644.500
2006.1904.228
2507.781–
3209.781–
40011.6327.890
50014.520–
64018.252–
80022.47116.000
100028.246–
125035.506–
160045.57030.484
200056.886–
250072.004–
320091.77356.493
6400–121.938

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Data: Photons to Photos · © William J. Claff