Canon EOS 70D vs Canon EOS 750D: read noise comparison

Input-referred read noise at base ISO: Canon EOS 70D 12.7 e⁻ (ISO 100), Canon EOS 750D 10.5 e⁻ (ISO 100).

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 750D

The Canon EOS 750D 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 5.82 DN, or 10.5 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 25,873 electrons; unity gain is around ISO 180.

Canon EOS 70D vs Canon EOS 750D read noise table

ISO	Canon EOS 70D	Canon EOS 750D
100	6.498	5.816
125	8.225	–
160	5.579	–
200	7.062	6.277
250	8.815	–
320	6.821	–
400	8.515	7.160
500	10.556	–
640	9.190	–
800	11.959	9.849
1000	15.032	–
1250	15.242	–
1600	19.027	15.889
2000	23.588	–
2500	23.918	–
3200	29.857	24.933
4000	37.271	–
5000	42.814	–
6400	53.446	44.324
8000	65.345	–
10000	86.823	–
12800	103.250	85.627

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