TREN
Samsung EX1 read noise vs ISO
The Samsung EX1 was measured at 7 ISO settings from ISO 80 to ISO 3200. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (80) read noise is 7.52 DN. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.
Samsung EX1 read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 80 | 7.516 | 2.91 |
| 100 | 10.056 | 3.33 |
| 200 | 20.393 | 4.35 |
| 400 | 41.070 | 5.36 |
| 800 | 80.449 | 6.33 |
| 1600 | 126.238 | 6.98 |
| 3200 | 298.172 | 8.22 |