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Panasonic Lumix DC-G9 vs Panasonic Lumix DC-GH5: read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix DC-G9 3.9 e⁻ (ISO 200), Panasonic Lumix DC-GH5 3.2 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-GH5

The Panasonic Lumix DC-GH5 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 0.81 DN, or 3.2 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 15,641 electrons; unity gain is around ISO 790.

Panasonic Lumix DC-G9 vs Panasonic Lumix DC-GH5 read noise table

ISOPanasonic Lumix DC-G9Panasonic Lumix DC-GH5
1000.6160.717
1250.6780.824
1600.7680.927
2000.6780.807
2500.7580.946
3200.8771.087
4001.0281.310
5001.2311.580
6401.4441.905
8001.7652.313
10001.7532.282
12502.0992.770
16002.6033.411
20003.0954.084
25003.7844.993
32004.5635.979
40005.5407.568
50006.7749.190
64008.34011.632
800010.62914.520
1000013.73718.765
1280016.56422.943
1600010.62914.825
2000013.26918.636
2560016.79522.943

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Data: Photons to Photos · © William J. Claff