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Canon EOS 6D vs Canon EOS 700D: read noise comparison

Input-referred read noise at base ISO: Canon EOS 6D 23.9 e⁻ (ISO 100), Canon EOS 700D 13 e⁻ (ISO 100).

Canon EOS 6D

The Canon EOS 6D was measured at 28 ISO settings from ISO 50 to ISO 102400. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 4.89 DN, or 23.9 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 25600 don't change analog gain (digital push). Full well at base ISO is about 69,959 electrons; unity gain is around ISO 490.

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 6D vs Canon EOS 700D read noise table

ISOCanon EOS 6DCanon EOS 700D
504.857–
1004.8917.835
1256.063–
1603.891–
2004.8578.398
2506.148–
3204.347–
4005.46410.483
5006.681–
6404.925–
8006.14814.825
10008.000–
12506.320–
16008.00025.813
200010.056–
25009.318–
320011.63244.632
400014.420–
500014.621–
640018.00183.865
800022.627–
1000029.243–
1280036.504166.572
1600046.527–
2000057.282–
2560071.012–
51200140.070–
102400257.781–

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Data: Photons to Photos · © William J. Claff