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Sony RX10 III vs Sony RX100 II: read noise comparison

Sony RX10 III

The Sony RX10 III (DSC-RX10M3) was measured at 24 ISO settings from ISO 64 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 3.12 DN, or 3 electrons at the sensor. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 14,868 electrons; unity gain is around ISO 100.

Sony RX100 IIDxO

The Sony RX100 II (DSC-RX100M2) was measured at 8 ISO settings from ISO 100 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 0.99 DN. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Sony RX10 III vs Sony RX100 II read noise table

ISOSony RX10 IIISony RX100 II
643.138–
803.655–
1003.1170.986
1253.605–
1604.228–
2004.8911.240
2505.897–
3207.062–
4008.3982.751
5009.987–
64012.042–
80014.8254.112
100017.268–
125021.407–
160026.3557.727
200031.341–
250038.586–
320048.50314.621
400063.119–
500077.708–
640079.34130.484
8000100.427–
10000125.366–
12800157.58670.035

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Data: Photons to Photos · © William J. Claff