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Panasonic Lumix DC-G9 vs Panasonic Lumix DC-G90: read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix DC-G9 3.9 e⁻ (ISO 200), Panasonic Lumix DC-G90 3.8 e⁻ (ISO 200).

Panasonic Lumix DC-G9

The Panasonic Lumix DC-G9 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 (200) read noise is 0.68 DN, or 3.9 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 12800 don't change analog gain (digital push). Full well at base ISO is about 22,741 electrons; unity gain is around ISO 1150.

Panasonic Lumix DC-G90

The Panasonic Lumix DC-G90 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 (200) read noise is 0.91 DN, or 3.8 electrons at the sensor. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 12800 don't change analog gain (digital push). Full well at base ISO is about 16,371 electrons; unity gain is around ISO 830.

Panasonic Lumix DC-G9 vs Panasonic Lumix DC-G90 read noise table

ISOPanasonic Lumix DC-G9Panasonic Lumix DC-G90
1000.6160.853
1250.6780.973
1600.7681.141
2000.6780.908
2500.7581.057
3200.8771.275
4001.0281.537
5001.2311.803
6401.4442.204
8001.7652.173
10001.7532.639
12502.0993.160
16002.6033.837
20003.0954.659
25003.7845.657
32004.5636.964
40005.5408.515
50006.77410.556
64008.34013.269
800010.62916.679
1000013.73721.259
1280016.56426.723
1600010.62916.679
2000013.26921.112
2560016.79526.723

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Data: Photons to Photos · © William J. Claff