Olympus E-30 vs Olympus E-330: read noise comparison
Input-referred read noise at base ISO: Olympus E-30 15.2 e⁻ (ISO 200), Olympus E-330 15.4 e⁻ (ISO 100).
Olympus E-30
The Olympus E-30 was measured at 16 ISO settings from ISO 100 to ISO 3200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.
At base ISO (200) read noise is 3.63 DN, or 15.2 electrons at the sensor. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 16,969 electrons; unity gain is around ISO 840.
Olympus E-330
The Olympus E-330 was measured at 13 ISO settings from ISO 100 to ISO 1600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.
At base ISO (100) read noise is 2.07 DN, or 15.4 electrons at the sensor. From ISO 100 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 29,931 electrons; unity gain is around ISO 740.
Olympus E-30 vs Olympus E-330 read noise table
| ISO | Olympus E-30 | Olympus E-330 |
|---|---|---|
| 100 | 3.555 | 2.071 |
| 125 | 4.563 | 2.621 |
| 160 | 5.776 | 3.227 |
| 200 | 3.630 | 3.784 |
| 250 | 4.532 | 4.691 |
| 320 | 5.776 | 5.979 |
| 400 | 5.134 | 7.516 |
| 500 | 6.409 | 9.383 |
| 640 | 8.168 | 12.126 |
| 800 | 8.340 | 14.723 |
| 1000 | 10.629 | 19.293 |
| 1250 | 13.737 | 23.588 |
| 1600 | 16.795 | 29.446 |
| 2000 | 21.407 | – |
| 2500 | 26.909 | – |
| 3200 | 32.900 | – |
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