Panasonic Lumix DC-S5 vs Panasonic Lumix DMC-FX150 read noise comparison

Panasonic Lumix DC-S5

The Panasonic Lumix DC-S5 was measured at 37 ISO settings from ISO 50 to ISO 204800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 1.57 DN, or 8.9 electrons at the sensor. A second gain (dual gain) kicks in at ISO 640, cutting input-referred read noise by about 1.5 stop. From ISO 5000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 51200 don't change analog gain (digital push). Full well at base ISO is about 90,466 electrons; unity gain is around ISO 570.

Panasonic Lumix DMC-FX150DxO

The Panasonic Lumix DMC-FX150 was measured at 5 ISO settings from ISO 100 to ISO 1600. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 7.16 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.

Panasonic Lumix DC-S5 vs Panasonic Lumix DMC-FX150 read noise table

ISO	Panasonic Lumix DC-S5	Panasonic Lumix DMC-FX150
50	1.087	–
64	1.257	–
80	1.366	–
100	1.569	7.160
125	1.778	–
160	2.000	–
200	2.346	12.906
250	2.751	–
320	3.227	–
400	3.864	26.173
500	4.563	–
640	2.071	–
800	2.428	28.840
1000	2.848	–
1250	3.387	–
1600	4.141	44.942
2000	4.925	–
2500	6.105	–
3200	7.516	–
4000	9.190	–
5000	10.778	–
6400	13.454	–
8000	16.564	–
10000	20.535	–
12800	25.457	–
16000	31.559	–
20000	41.643	–
25600	50.563	–
32000	61.820	–
40000	76.639	–
51200	95.670	–
64000	119.428	–
80000	148.056	–
102400	184.823	–
128000	240.518	–
160000	290.018	–
204800	362.039	–

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Panasonic Lumix DC-S5 vs Panasonic Lumix DMC-FX150: read noise comparison