TREN
Pixii A1571 read noise vs ISO
The Pixii A1571 was measured at 10 ISO settings from ISO 80 to ISO 25600. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (80) read noise is 0.59 DN. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.
Pixii A1571 read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 80 | 0.595 | -0.75 |
| 100 | 0.747 | -0.42 |
| 200 | 0.633 | -0.66 |
| 400 | 0.979 | -0.03 |
| 800 | 1.682 | 0.75 |
| 1600 | 1.310 | 0.39 |
| 3200 | 2.445 | 1.29 |
| 6400 | 4.408 | 2.14 |
| 12800 | 7.945 | 2.99 |
| 25600 | 15.780 | 3.98 |