Panasonic Lumix DMC-LX100 vs Panasonic Lumix DMC-LX3 read noise comparison

Panasonic Lumix DMC-LX100

The Panasonic Lumix DMC-LX100 was measured at 25 ISO settings from ISO 100 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 1.03 DN, or 7 electrons at the sensor. From ISO 1250 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 26,847 electrons; unity gain is around ISO 680.

Panasonic Lumix DMC-LX3DxO

The Panasonic Lumix DMC-LX3 was measured at 7 ISO settings from ISO 80 to ISO 3200. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (80) read noise is 2.28 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.

Panasonic Lumix DMC-LX100 vs Panasonic Lumix DMC-LX3 read noise table

ISO	Panasonic Lumix DMC-LX100	Panasonic Lumix DMC-LX3
80	–	2.282
100	1.028	2.751
125	1.079	–
160	1.102	–
200	1.133	5.618
250	1.189	–
320	1.275	–
400	1.424	10.556
500	1.537	–
640	1.741	–
800	2.028	20.112
1000	2.428	–
1250	2.868	–
1600	3.506	40.504
2000	4.347	–
2500	5.352	–
3200	6.727	65.799
4000	8.340	–
5000	10.196	–
6400	12.906	–
8000	16.564	–
10000	20.252	–
12800	25.457	–
16000	33.591	–
20000	40.504	–
25600	49.522	–

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Panasonic Lumix DMC-LX100 vs Panasonic Lumix DMC-LX3: read noise comparison