Canon EOS 10D vs Canon EOS 1100D: read noise comparison
Input-referred read noise at base ISO: Canon EOS 10D 15.6 e⁻ (ISO 100), Canon EOS 1100D 15.9 e⁻ (ISO 100).
Canon EOS 10D
The Canon EOS 10D was measured at 6 ISO settings from ISO 100 to ISO 3200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.
At base ISO (100) read noise is 1.73 DN, or 15.6 electrons at the sensor. From ISO 200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 1600 don't change analog gain (digital push). Full well at base ISO is about 35,759 electrons; unity gain is around ISO 900.
Canon EOS 1100D
The Canon EOS 1100D was measured at 7 ISO settings from ISO 100 to ISO 6400. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.
At base ISO (100) read noise is 7.01 DN, or 15.9 electrons at the sensor. From ISO 3200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 32,486 electrons; unity gain is around ISO 230.
Canon EOS 10D vs Canon EOS 1100D read noise table
| ISO | Canon EOS 10D | Canon EOS 1100D |
|---|---|---|
| 100 | 1.729 | 7.013 |
| 200 | 2.514 | 7.260 |
| 400 | 4.347 | 8.000 |
| 800 | 8.634 | 10.339 |
| 1600 | 17.268 | 14.825 |
| 3200 | 17.268 | 24.251 |
| 6400 | – | 46.851 |
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