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

Input-referred read noise at base ISO: Apple iPhone 14 Pro Max 5 e⁻ (ISO 64), Apple iPhone XS Max 4.7 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 XS Max

The Apple iPhone XS Max was measured at 19 ISO settings from ISO 25 to ISO 2000. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (25) read noise is 1.88 DN, or 4.7 electrons at the sensor. From ISO 125 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 8,980 electrons; unity gain is around ISO 60.

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

ISO	Apple iPhone 14 Pro Max	Apple iPhone XS Max
25	–	1.879
32	–	2.000
40	–	2.235
64	1.613	2.751
80	1.693	3.074
100	1.705	3.482
125	1.853	4.084
160	2.056	4.790
200	2.235	5.540
250	2.395	5.657
320	2.732	5.618
400	3.095	5.540
500	3.387	5.657
640	3.364	5.657
800	3.434	5.618
1000	3.434	5.618
1250	3.411	5.579
1600	3.387	5.618
2000	3.411	5.618
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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