TREN
Phase One P65+ read noise vs ISO
The Phase One P65+ was measured at 6 ISO settings from ISO 100 to ISO 3200. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (100) read noise is 21.86 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.
Phase One P65+ read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 100 | 21.857 | 4.45 |
| 200 | 40.504 | 5.34 |
| 400 | 85.036 | 6.41 |
| 800 | 171.255 | 7.42 |
| 1600 | 372.217 | 8.54 |
| 3200 | 621.668 | 9.28 |