TREN
Canon EOS 650D read noise vs ISO
The Canon EOS 650D was measured at 9 ISO settings from ISO 100 to ISO 25600. Values were derived by Bill Claff from DxOMark lab data.
At base ISO (100) read noise is 9.99 DN. Read noise keeps falling across the measured range, so the camera isn't fully ISO-invariant there.
Canon EOS 650D read noise table
| ISO | Read noise (DN) | log₂ |
|---|---|---|
| 100 | 9.987 | 3.32 |
| 200 | 11.004 | 3.46 |
| 400 | 12.553 | 3.65 |
| 800 | 18.765 | 4.23 |
| 1600 | 29.857 | 4.90 |
| 3200 | 51.984 | 5.70 |
| 6400 | 126.238 | 6.98 |
| 12800 | 186.108 | 7.54 |
| 25600 | 242.191 | 7.92 |