TREN
Leica C read noise vs ISO
The Leica C was measured at 9 ISO settings from ISO 80 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (80) read noise is 1.41 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.
Leica C read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 80 | 1.414 | 0.50 |
| 100 | 1.537 | 0.62 |
| 200 | 3.031 | 1.60 |
| 400 | 4.170 | 2.06 |
| 800 | 9.190 | 3.20 |
| 1600 | 18.765 | 4.23 |
| 3200 | 33.825 | 5.08 |
| 6400 | 93.701 | 6.55 |
| 12800 | 112.206 | 6.81 |