Canon EOS 1000D vs Canon EOS 1100D: read noise comparison
Input-referred read noise at base ISO: Canon EOS 1000D 18.8 e⁻ (ISO 100), Canon EOS 1100D 15.9 e⁻ (ISO 100).
Canon EOS 1000D
The Canon EOS 1000D was measured at 5 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 1.99 DN, or 18.8 electrons at the sensor. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there. Full well at base ISO is about 36,489 electrons; unity gain is around ISO 950.
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 1000D vs Canon EOS 1100D read noise table
| ISO | Canon EOS 1000D | Canon EOS 1100D |
|---|---|---|
| 100 | 1.986 | 7.013 |
| 200 | 2.158 | 7.260 |
| 400 | 2.713 | 8.000 |
| 800 | 4.112 | 10.339 |
| 1600 | 6.727 | 14.825 |
| 3200 | – | 24.251 |
| 6400 | – | 46.851 |
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