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Panasonic Lumix DMC-G6 vs Panasonic Lumix DMC-G7: read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix DMC-G6 5.4 e⁻ (ISO 160), Panasonic Lumix DMC-G7 4 e⁻ (ISO 100).

Panasonic Lumix DMC-G6

The Panasonic Lumix DMC-G6 was measured at 23 ISO settings from ISO 160 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (160) read noise is 1.73 DN, or 5.4 electrons at the sensor. From ISO 640 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 8000 don't change analog gain (digital push). Full well at base ISO is about 12,444 electrons; unity gain is around ISO 500.

Panasonic Lumix DMC-G7

The Panasonic Lumix DMC-G7 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 (100) read noise is 0.54 DN, or 4 electrons at the sensor. From ISO 1000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 29,041 electrons; unity gain is around ISO 740.

Panasonic Lumix DMC-G6 vs Panasonic Lumix DMC-G7 read noise table

ISOPanasonic Lumix DMC-G6Panasonic Lumix DMC-G7
100–0.540
125–0.651
1601.7290.774
2002.1290.841
2502.6390.871
3202.5320.979
4003.1821.173
5004.0561.385
6404.1991.602
8005.2781.905
10006.7272.250
12507.9452.789
16009.9873.387
200013.5484.228
250015.6715.315
320020.1126.498
400027.2848.112
500030.9109.646
640042.22412.467
800056.49315.889
1000066.25719.427
1280083.28625.107
16000104.69131.779
20000126.23838.854
25600157.58648.168

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Data: Photons to Photos · © William J. Claff