Nikon D3300 vs Nikon D3400: read noise comparison

Input-referred read noise at base ISO: Nikon D3300 6.3 e⁻ (ISO 100), Nikon D3400 2.5 e⁻ (ISO 100).

Nikon D3300

The Nikon D3300 was measured at 9 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 0.75 DN, or 6.3 electrons at the sensor. From ISO 1600 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 12800 don't change analog gain (digital push). Full well at base ISO is about 33,177 electrons; unity gain is around ISO 840.

Nikon D3400

The Nikon D3400 was measured at 9 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 0.28 DN, or 2.5 electrons at the sensor. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 12800 don't change analog gain (digital push). Full well at base ISO is about 34,354 electrons; unity gain is around ISO 870.

Nikon D3300 vs Nikon D3400 read noise table

ISO	Nikon D3300	Nikon D3400
100	0.753	0.283
200	0.796	0.426
400	1.301	0.702
800	2.313	1.266
1600	4.287	2.479
3200	8.282	4.823
6400	15.455	9.646
12800	30.274	18.636
25600	57.680	37.792

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