Sony RX100 VII vs Sony ZV-1: read noise comparison

Input-referred read noise at base ISO: Sony RX100 VII 3.1 e⁻ (ISO 100), Sony ZV-1 1.9 e⁻ (ISO 125).

Sony RX100 VII

The Sony RX100 VII (DSC-RX100M7) was measured at 22 ISO settings from ISO 100 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 3.94 DN, or 3.1 electrons at the sensor. From ISO 640 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 3200 don't change analog gain (digital push). Full well at base ISO is about 12,338 electrons; unity gain is around ISO 80.

Sony ZV-1

The Sony ZV-1 was measured at 23 ISO settings from ISO 80 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (125) read noise is 3.34 DN, or 1.9 electrons at the sensor. From ISO 2500 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 8,855 electrons; unity gain is around ISO 70.

Sony RX100 VII vs Sony ZV-1 read noise table

ISO	Sony RX100 VII	Sony ZV-1
80	–	3.340
100	3.945	3.864
125	4.408	3.340
160	5.098	3.891
200	5.856	4.500
250	6.635	5.352
320	8.056	6.364
400	9.514	7.621
500	11.632	9.190
640	13.548	11.081
800	16.795	13.086
1000	20.535	16.000
1250	24.084	19.427
1600	29.651	23.425
2000	36.504	29.243
2500	45.887	35.017
3200	57.680	44.017
4000	70.035	51.984
5000	85.036	64.000
6400	103.250	77.172
8000	129.787	96.336
10000	160.898	121.938
12800	202.251	154.343

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