TREN
FujiFilm FinePix F550EXR read noise vs ISO
The FujiFilm FinePix F550EXR 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 3.25 DN. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.
FujiFilm FinePix F550EXR read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 100 | 3.249 | 1.70 |
| 200 | 4.959 | 2.31 |
| 400 | 11.713 | 3.55 |
| 800 | 17.388 | 4.12 |
| 1600 | 53.446 | 5.74 |
| 3200 | 97.006 | 6.60 |