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Panasonic Lumix DC-G90 vs Panasonic Lumix DC-GH5: read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix DC-G90 3.8 e⁻ (ISO 200), Panasonic Lumix DC-GH5 3.2 e⁻ (ISO 200).

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-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-G90 vs Panasonic Lumix DC-GH5 read noise table

ISOPanasonic Lumix DC-G90Panasonic Lumix DC-GH5
1000.8530.717
1250.9730.824
1601.1410.927
2000.9080.807
2501.0570.946
3201.2751.087
4001.5371.310
5001.8031.580
6402.2041.905
8002.1732.313
10002.6392.282
12503.1602.770
16003.8373.411
20004.6594.084
25005.6574.993
32006.9645.979
40008.5157.568
500010.5569.190
640013.26911.632
800016.67914.520
1000021.25918.765
1280026.72322.943
1600016.67914.825
2000021.11218.636
2560026.72322.943

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Data: Photons to Photos · © William J. Claff