TREN
Samsung GX-20 read noise vs ISO
The Samsung GX-20 was measured at 7 ISO settings from ISO 100 to ISO 6400. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (100) read noise is 2.53 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.
Samsung GX-20 read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 100 | 2.532 | 1.34 |
| 200 | 4.317 | 2.11 |
| 400 | 4.857 | 2.28 |
| 800 | 7.210 | 2.85 |
| 1600 | 9.987 | 3.32 |
| 3200 | 21.407 | 4.42 |
| 6400 | 35.261 | 5.14 |