TREN
Sony ZV-1 read noise vs ISO
The Sony ZV-1 was measured at 23 ISO settings from ISO 80 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.
At base ISO (125) read noise is 3.34 DN, or 1.9 electrons at the sensor. From ISO 2500 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 8,855 electrons; unity gain is around ISO 70.
Sony ZV-1 read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 80 | ○ 3.340 | 1.74 |
| 100 | ○ 3.864 | 1.95 |
| 125 | 3.340 | 1.74 |
| 160 | 3.891 | 1.96 |
| 200 | 4.500 | 2.17 |
| 250 | 5.352 | 2.42 |
| 320 | 6.364 | 2.67 |
| 400 | 7.621 | 2.93 |
| 500 | 9.190 | 3.20 |
| 640 | 11.081 | 3.47 |
| 800 | 13.086 | 3.71 |
| 1000 | 16.000 | 4.00 |
| 1250 | 19.427 | 4.28 |
| 1600 | 23.425 | 4.55 |
| 2000 | 29.243 | 4.87 |
| 2500 | 35.017 | 5.13 |
| 3200 | 44.017 | 5.46 |
| 4000 | ▼ 51.984 | 5.70 |
| 5000 | ▼ 64.000 | 6.00 |
| 6400 | ▼ 77.172 | 6.27 |
| 8000 | ▼ 96.336 | 6.59 |
| 10000 | ▼ 121.938 | 6.93 |
| 12800 | ▼ 154.343 | 7.27 |