Nikon D1H vs Nikon D200: read noise comparison

Input-referred read noise at base ISO: Nikon D1H 19.3 e⁻ (ISO 200), Nikon D200 15.7 e⁻ (ISO 100).

Nikon D1H

The Nikon D1H was measured at 12 ISO settings from ISO 200 to ISO 6400. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (200) read noise is 2.28 DN, or 19.3 electrons at the sensor. From ISO 200 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 1600 don't change analog gain (digital push). Full well at base ISO is about 34,684 electrons; unity gain is around ISO 1690.

Nikon D200

The Nikon D200 was measured at 16 ISO settings from ISO 100 to ISO 3200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 2.19 DN, or 15.7 electrons at the sensor. From ISO 160 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 29,257 electrons; unity gain is around ISO 720.

Nikon D1H vs Nikon D200 read noise table

ISO	Nikon D1H	Nikon D200
100	–	2.189
125	–	2.713
160	–	3.272
200	2.282	3.945
250	2.603	4.691
320	3.138	5.776
400	4.000	7.210
500	4.959	9.000
640	6.320	11.472
800	7.890	14.929
1000	9.714	18.765
1250	12.295	23.588
1600	15.455	29.243
2000	–	37.531
2500	–	46.851
3200	30.696	58.485
6400	60.969	–

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