Canon EOS M6 vs Canon EOS M6 Mark II: read noise comparison

Input-referred read noise at base ISO: Canon EOS M6 6.5 e⁻ (ISO 100), Canon EOS M6 Mark II 6.1 e⁻ (ISO 100).

Canon EOS M6

The Canon EOS M6 was measured at 25 ISO settings from ISO 100 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 3.56 DN, or 6.5 electrons at the sensor. From ISO 8000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 28,781 electrons; unity gain is around ISO 180.

Canon EOS M6 Mark II

The Canon EOS M6 Mark II was measured at 25 ISO settings from ISO 100 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 3.29 DN, or 6.1 electrons at the sensor. From ISO 5000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 29,216 electrons; unity gain is around ISO 180.

Canon EOS M6 vs Canon EOS M6 Mark II read noise table

ISO	Canon EOS M6	Canon EOS M6 Mark II
100	3.555	3.294
125	4.595	4.228
160	3.837	3.182
200	4.724	3.918
250	6.105	5.134
320	6.453	3.732
400	7.890	4.659
500	10.056	6.021
640	11.314	6.869
800	14.123	8.634
1000	18.001	11.158
1250	20.252	11.004
1600	26.173	13.929
2000	32.447	18.001
2500	36.002	18.896
3200	45.887	23.588
4000	56.886	29.041
5000	61.393	31.341
6400	77.172	39.947
8000	89.264	49.180
10000	111.430	61.820
12800	141.044	78.249
16000	170.072	98.360
20000	205.074	122.786
25600	252.476	153.277

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