Canon EOS 600D vs Canon EOS 60Da: read noise comparison

Input-referred read noise at base ISO: Canon EOS 600D 14.7 e⁻ (ISO 100), Canon EOS 60Da 14.2 e⁻ (ISO 100).

Canon EOS 600D

The Canon EOS 600D 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 7.84 DN, or 14.7 electrons at the sensor. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 26,796 electrons; unity gain is around ISO 190.

Canon EOS 60Da

The Canon EOS 60Da was measured at 20 ISO settings from ISO 100 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 5.98 DN, or 14.2 electrons at the sensor. From ISO 2500 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 6400 don't change analog gain (digital push). Full well at base ISO is about 33,926 electrons; unity gain is around ISO 240.

Canon EOS 600D vs Canon EOS 60Da read noise table

ISO	Canon EOS 600D	Canon EOS 60Da
100	7.835	5.979
125	–	7.727
160	–	5.205
200	8.398	6.498
250	–	8.112
320	–	6.277
400	10.629	7.835
500	–	9.918
640	–	8.815
800	15.562	11.004
1000	–	14.123
1250	–	15.032
1600	26.355	18.896
2000	–	23.425
2500	–	26.909
3200	48.168	33.359
4000	–	39.124
5000	–	49.522
6400	89.884	62.683
12800	–	118.603

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