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FujiFilm FinePix S5 Pro vs FujiFilm FinePix X-S1: read noise comparison

FujiFilm FinePix S5 Pro

The FujiFilm FinePix S5 Pro was measured at 16 ISO settings from ISO 100 to ISO 3200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 4.41 DN, or 9.6 electrons at the sensor. From ISO 200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 35,730 electrons; unity gain is around ISO 220.

FujiFilm FinePix X-S1DxO

The FujiFilm FinePix X-S1 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 1.91 DN. From ISO 400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

FujiFilm FinePix S5 Pro vs FujiFilm FinePix X-S1 read noise table

ISOFujiFilm FinePix S5 ProFujiFilm FinePix X-S1
1004.4081.905
1255.540–
1606.964–
2007.1603.249
2509.063–
32011.472–
40014.5205.426
50018.252–
64023.103–
80029.44611.004
100037.014–
125046.851–
160059.71429.446
200075.061–
250094.353–
3200120.25969.071

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Data: Photons to Photos · © William J. Claff