Canon EOS 7D Mark II vs Canon EOS 80D: read noise comparison

Input-referred read noise at base ISO: Canon EOS 7D Mark II 13.8 e⁻ (ISO 100), Canon EOS 80D 5.8 e⁻ (ISO 100).

Canon EOS 7D Mark II

The Canon EOS 7D Mark II was measured at 25 ISO settings from ISO 100 to ISO 51200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 5.70 DN, or 13.8 electrons at the sensor. From ISO 4000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 16000 don't change analog gain (digital push). Full well at base ISO is about 34,937 electrons; unity gain is around ISO 240.

Canon EOS 80D

The Canon EOS 80D was measured at 24 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 2.83 DN, or 5.8 electrons at the sensor. From ISO 5000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 16000 don't change analog gain (digital push). Full well at base ISO is about 32,529 electrons; unity gain is around ISO 210.

Canon EOS 7D Mark II vs Canon EOS 80D read noise table

ISO	Canon EOS 7D Mark II	Canon EOS 80D
100	5.696	2.828
125	7.062	3.555
160	4.891	3.160
200	6.148	3.918
250	7.674	4.891
320	5.938	4.993
400	7.362	6.233
500	9.190	7.890
640	8.056	8.815
800	9.987	11.158
1000	12.467	14.026
1250	12.042	15.671
1600	15.780	19.698
2000	19.160	24.761
2500	19.160	27.474
3200	24.590	34.776
4000	29.446	44.324
5000	33.359	47.835
6400	41.070	59.714
8000	50.563	75.584
10000	63.558	93.701
12800	79.893	119.428
16000	100.427	149.086
25600	155.417	224.411
51200	280.139	–

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