Apple iPhone 14 Pro Max vs Apple iPhone 7: read noise comparison

Input-referred read noise at base ISO: Apple iPhone 14 Pro Max 5 e⁻ (ISO 64), Apple iPhone 7 1.6 e⁻ (ISO 25).

Apple iPhone 14 Pro Max

The Apple iPhone 14 Pro Max was measured at 23 ISO settings from ISO 64 to ISO 10000. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (64) read noise is 1.61 DN, or 5 electrons at the sensor. From ISO 400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 500 don't change analog gain (digital push). Full well at base ISO is about 11,146 electrons; unity gain is around ISO 200.

Apple iPhone 7

The Apple iPhone 7 was measured at 19 ISO settings from ISO 25 to ISO 1600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (25) read noise is 2.39 DN, or 1.6 electrons at the sensor. From ISO 160 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 200 don't change analog gain (digital push). Full well at base ISO is about 2,340 electrons; unity gain is around ISO 20.

Apple iPhone 14 Pro Max vs Apple iPhone 7 read noise table

ISO	Apple iPhone 14 Pro Max	Apple iPhone 7
25	–	2.395
32	–	2.676
40	–	2.990
50	–	3.434
64	1.613	3.864
80	1.693	4.500
100	1.705	5.540
125	1.853	6.498
160	2.056	7.727
200	2.235	8.340
250	2.395	8.282
320	2.732	8.515
400	3.095	8.340
500	3.387	8.456
640	3.364	8.398
800	3.434	8.398
1000	3.434	8.456
1250	3.411	8.456
1600	3.387	8.340
2000	3.411	–
2500	3.411	–
3200	3.411	–
4000	3.411	–
5000	3.387	–
6400	3.434	–
8000	3.458	–
10000	3.411	–

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