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Panasonic Lumix DMC-G85 vs Panasonic Lumix DMC-GF2: read noise comparison

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-GF2DxO

The Panasonic Lumix DMC-GF2 was measured at 7 ISO settings from ISO 100 to ISO 6400. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 3.97 DN. From ISO 400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Panasonic Lumix DMC-G85 vs Panasonic Lumix DMC-GF2 read noise table

ISOPanasonic Lumix DMC-G85Panasonic Lumix DMC-GF2
1001.0143.972
1251.102–
1601.181–
2001.2665.618
2501.283–
3201.385–
4001.59110.126
5001.765–
6402.000–
8002.32919.562
10002.732–
12503.227–
16004.00042.224
20004.724–
25005.816–
32007.21072.505
40008.574–
500010.556–
640013.086157.586
800016.795–
1000020.966–
1280025.992–
1600033.128–
2000041.355–
2560051.268–

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Data: Photons to Photos · © William J. Claff