Canon EOS 700D vs Canon EOS 70D: read noise comparison

Input-referred read noise at base ISO: Canon EOS 700D 13 e⁻ (ISO 100), Canon EOS 70D 12.7 e⁻ (ISO 100).

Canon EOS 700D

The Canon EOS 700D was measured at 8 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 7.84 DN, or 13 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 23,712 electrons; unity gain is around ISO 170.

Canon EOS 70D

The Canon EOS 70D was measured at 22 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 6.50 DN, or 12.7 electrons at the sensor. From ISO 2500 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 28,067 electrons; unity gain is around ISO 200.

Canon EOS 700D vs Canon EOS 70D read noise table

ISO	Canon EOS 700D	Canon EOS 70D
100	7.835	6.498
125	–	8.225
160	–	5.579
200	8.398	7.062
250	–	8.815
320	–	6.821
400	10.483	8.515
500	–	10.556
640	–	9.190
800	14.825	11.959
1000	–	15.032
1250	–	15.242
1600	25.813	19.027
2000	–	23.588
2500	–	23.918
3200	44.632	29.857
4000	–	37.271
5000	–	42.814
6400	83.865	53.446
8000	–	65.345
10000	–	86.823
12800	166.572	103.250

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