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Panasonic Lumix DMC-G6 vs Panasonic Lumix DMC-G85: read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix DMC-G6 5.4 e⁻ (ISO 160), Panasonic Lumix DMC-G85 5.2 e⁻ (ISO 160).

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-G85

The Panasonic Lumix DMC-G85 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 (160) read noise is 1.18 DN, or 5.2 electrons at the sensor. From ISO 2000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 6400 don't change analog gain (digital push). Full well at base ISO is about 17,253 electrons; unity gain is around ISO 690.

Panasonic Lumix DMC-G6 vs Panasonic Lumix DMC-G85 read noise table

ISOPanasonic Lumix DMC-G6Panasonic Lumix DMC-G85
100–1.014
125–1.102
1601.7291.181
2002.1291.266
2502.6391.283
3202.5321.385
4003.1821.591
5004.0561.765
6404.1992.000
8005.2782.329
10006.7272.732
12507.9453.227
16009.9874.000
200013.5484.724
250015.6715.816
320020.1127.210
400027.2848.574
500030.91010.556
640042.22413.086
800056.49316.795
1000066.25720.966
1280083.28625.992
16000104.69133.128
20000126.23841.355
25600157.58651.268

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Data: Photons to Photos · © William J. Claff