TREN
Olympus PEN E-P5 vs Olympus PEN E-P7: read noise comparison
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 PEN E-P7
The Olympus PEN E-P7 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 0.82 DN, or 5.1 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 23,899 electrons; unity gain is around ISO 1250.
Olympus PEN E-P5 vs Olympus PEN E-P7 read noise table
| ISO | Olympus PEN E-P5 | Olympus PEN E-P7 |
|---|---|---|
| 100 | – | 0.768 |
| 200 | 0.979 | 0.818 |
| 250 | 1.231 | 0.946 |
| 320 | – | 1.125 |
| 400 | 1.157 | 1.347 |
| 500 | – | 1.625 |
| 640 | – | 1.959 |
| 800 | 2.144 | 2.346 |
| 1000 | – | 2.848 |
| 1250 | – | 3.458 |
| 1600 | 3.555 | 4.257 |
| 2000 | – | 4.170 |
| 2500 | – | 5.028 |
| 3200 | 7.210 | 6.190 |
| 4000 | – | 7.674 |
| 5000 | – | 9.318 |
| 6400 | 14.221 | 11.551 |
| 8000 | – | 14.825 |
| 10000 | – | 18.765 |
| 12800 | 30.274 | 23.264 |
| 16000 | – | 29.243 |
| 20000 | – | 37.531 |
| 25600 | 60.129 | 46.527 |
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