TREN
Leica M9-P read noise vs ISO
The Leica M9-P was measured at 6 ISO settings from ISO 80 to ISO 2500. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (80) read noise is 9.58 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.
Leica M9-P read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 80 | 9.580 | 3.26 |
| 200 | 9.514 | 3.25 |
| 400 | 18.636 | 4.22 |
| 800 | 28.443 | 4.83 |
| 1600 | 83.286 | 6.38 |
| 2500 | 106.153 | 6.73 |