TREN
Sony a33 vs Sony a330: read noise comparison
Sony a33DxO
The Sony a33 (SLT-A33) 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 0.82 DN. From ISO 400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.
Sony a330DxO
The Sony a330 (DSLR-A330) was measured at 6 ISO settings from ISO 100 to ISO 3200. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (100) read noise is 1.57 DN. From ISO 400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.
Sony a33 vs Sony a330 read noise table
| ISO | Sony a33 | Sony a330 |
|---|---|---|
| 100 | 0.824 | 1.569 |
| 200 | 1.283 | 2.868 |
| 400 | 2.219 | 5.315 |
| 800 | 4.500 | 10.556 |
| 1600 | 8.515 | 20.821 |
| 3200 | 17.509 | 37.792 |
| 6400 | 31.779 | – |
| 12800 | 138.141 | – |
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