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Panasonic Lumix G9 II vs Panasonic Lumix G9 II (ES): read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix G9 II 2.5 e⁻ (ISO 100), Panasonic Lumix G9 II (ES) 2.7 e⁻ (ISO 100).

Panasonic Lumix G9 II

The Panasonic Lumix G9 II (Lumix DC-G9M2) was measured at 28 ISO settings from ISO 50 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 9.78 DN, or 2.5 electrons at the sensor. From ISO 3200 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 16,380 electrons; unity gain is around ISO 30.

Panasonic Lumix G9 II (ES)

The Panasonic Lumix G9 II (ES) (Lumix DC-G9M2) was measured at 28 ISO settings from ISO 50 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 9.71 DN, or 2.7 electrons at the sensor. From ISO 4000 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 17,777 electrons; unity gain is around ISO 30.

Panasonic Lumix G9 II vs Panasonic Lumix G9 II (ES) read noise table

ISO	Panasonic Lumix G9 II	Panasonic Lumix G9 II (ES)
50	9.254	9.318
64	9.318	9.318
80	9.580	9.514
100	9.781	9.714
125	10.126	9.849
160	10.629	10.339
200	10.339	10.928
250	11.004	10.629
320	11.959	11.236
400	14.026	12.295
500	16.336	14.825
640	19.160	17.268
800	21.857	20.821
1000	26.173	23.264
1250	32.223	28.641
1600	40.224	35.261
2000	49.522	43.111
2500	61.820	54.192
3200	62.683	67.649
4000	77.708	67.649
5000	98.360	83.865
6400	123.640	106.153
8000	156.498	133.436
10000	195.361	171.255
12800	247.280	215.269
16000	310.834	270.597
20000	396.177	340.144
25600	497.999	421.679

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