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Sony NEX-7 vs Sony NEX-C3: read noise comparison

Sony NEX-7DxO

The Sony NEX-7 was measured at 9 ISO settings from ISO 100 to ISO 16000. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 0.58 DN. From ISO 3200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Sony NEX-C3DxO

The Sony NEX-C3 was measured at 7 ISO settings from ISO 200 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (200) read noise is 1.12 DN. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Sony NEX-7 vs Sony NEX-C3 read noise table

ISOSony NEX-7Sony NEX-C3
1000.578–
2001.0641.117
4001.7781.558
8003.5802.549
16007.6745.028
320012.99610.056
640022.31620.535
1280049.18039.124
1600063.558–

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Data: Photons to Photos · © William J. Claff