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Canon EOS R10 (EFCS) vs Canon EOS R10 (ES): read noise comparison

Canon EOS R10 (EFCS)

The Canon EOS R10 (EFCS) was measured at 27 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 1.92 DN. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 32000 don't change analog gain (digital push).

Canon EOS R10 (ES)

The Canon EOS R10 (ES) was measured at 27 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 3.86 DN, or 8.2 electrons at the sensor. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 32000 don't change analog gain (digital push). Full well at base ISO is about 33,823 electrons; unity gain is around ISO 210.

Canon EOS R10 (EFCS) vs Canon EOS R10 (ES) read noise table

ISOCanon EOS R10 (EFCS)Canon EOS R10 (ES)
1001.9193.864
1252.6035.098
1603.5556.635
2002.7514.563
2503.5556.021
3204.9257.727
4004.6596.277
5006.1488.168
6408.05610.556
8009.19011.004
100011.79413.833
125015.03217.630
160017.26819.027
200022.16224.251
250027.66530.274
320031.34133.359
400039.39741.933
500050.21353.076
640042.81442.224
800053.81753.817
1000066.71867.182
1280085.62785.627
16000109.896108.383
20000135.298135.298
25600172.446171.255
32000210.839209.383
51200308.687310.834

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Data: Photons to Photos · © William J. Claff