Nikon D5600 vs Nikon D6: read noise comparison

Input-referred read noise at base ISO: Nikon D5600 3.1 e⁻ (ISO 100), Nikon D6 40.8 e⁻ (ISO 100).

Nikon D5600

The Nikon D5600 was measured at 25 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 1.47 DN, or 3.1 electrons at the sensor. From ISO 500 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 2500 don't change analog gain (digital push). Full well at base ISO is about 32,718 electrons; unity gain is around ISO 210.

Nikon D6

The Nikon D6 was measured at 41 ISO settings from ISO 50 to ISO 3276800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 5.98 DN, or 40.8 electrons at the sensor. From ISO 10000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 102400 don't change analog gain (digital push). Full well at base ISO is about 104,561 electrons; unity gain is around ISO 680.

Nikon D5600 vs Nikon D6 read noise table

ISO	Nikon D5600	Nikon D6
50	–	5.979
64	–	6.021
80	–	6.021
100	1.474	5.979
125	1.778	7.568
160	2.129	9.448
200	2.585	6.320
250	3.182	7.835
320	3.758	9.714
400	4.659	7.160
500	5.618	8.938
640	6.964	7.362
800	8.340	9.190
1000	10.339	11.314
1250	12.906	7.674
1600	16.000	9.580
2000	19.835	11.794
2500	24.933	9.000
3200	31.341	11.392
4000	38.854	14.026
5000	48.840	12.381
6400	61.820	15.671
8000	77.172	19.427
10000	99.044	19.973
12800	123.640	24.933
16000	150.123	29.857
20000	188.706	38.055
25600	245.572	48.168
32000	–	61.393
40000	–	76.639
51200	–	96.336
64000	–	120.259
80000	–	151.167
102400	–	191.341
128000	–	235.568
160000	–	290.018
204800	–	359.538
409600	–	634.730
819200	–	1,052.789
1638400	–	1,782.888
3276800	–	3,169.413

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