Olympus OM-D E-M5 Mark II vs Olympus PEN E-P5: read noise comparison
Olympus OM-D E-M5 Mark II
The Olympus OM-D E-M5 Mark II was measured at 23 ISO settings from ISO 100 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.
At base ISO (200) read noise is 0.97 DN, or 6.4 electrons at the sensor. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 3200 don't change analog gain (digital push). Full well at base ISO is about 25,607 electrons; unity gain is around ISO 1340.
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 II vs Olympus PEN E-P5 read noise table
| ISO | Olympus OM-D E-M5 Mark II | Olympus PEN E-P5 |
|---|---|---|
| 100 | 0.966 | – |
| 200 | 0.966 | 0.979 |
| 250 | 1.125 | 1.231 |
| 320 | 1.329 | – |
| 400 | 1.057 | 1.157 |
| 500 | 1.266 | – |
| 640 | 1.495 | – |
| 800 | 1.815 | 2.144 |
| 1000 | 2.204 | – |
| 1250 | 2.713 | – |
| 1600 | 3.364 | 3.555 |
| 2000 | 4.170 | – |
| 2500 | 5.063 | – |
| 3200 | 6.277 | 7.210 |
| 4000 | 7.835 | – |
| 5000 | 10.056 | – |
| 6400 | 12.641 | 14.221 |
| 8000 | 15.889 | – |
| 10000 | 19.973 | – |
| 12800 | 25.457 | 30.274 |
| 16000 | 31.779 | – |
| 20000 | 39.397 | – |
| 25600 | 50.213 | 60.129 |
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