Olympus OM-D E-M5 Mark III vs Olympus PEN E-P5 read noise comparison

Olympus OM-D E-M5 Mark III

The Olympus OM-D E-M5 Mark III was measured at 23 ISO settings from ISO 64 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (200) read noise is 0.78 DN, or 4.6 electrons at the sensor. From ISO 2000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 22,517 electrons; unity gain is around ISO 1170.

Olympus PEN E-P5DxO

The Olympus PEN E-P5 was measured at 9 ISO settings from ISO 200 to ISO 25600. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (200) read noise is 0.98 DN. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Olympus OM-D E-M5 Mark III vs Olympus PEN E-P5 read noise table

ISO	Olympus OM-D E-M5 Mark III	Olympus PEN E-P5
64	0.883	–
200	0.779	0.979
250	0.877	1.231
320	1.000	–
400	1.197	1.157
500	1.414	–
640	1.647	–
800	2.028	2.144
1000	2.395	–
1250	2.928	–
1600	3.555	3.555
2000	3.294	–
2500	3.891	–
3200	4.790	7.210
4000	5.696	–
5000	7.111	–
6400	8.938	14.221
8000	11.236	–
10000	14.320	–
12800	17.630	30.274
16000	22.785	–
20000	28.443	–
25600	35.753	60.129

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Olympus OM-D E-M5 Mark III vs Olympus PEN E-P5: read noise comparison