Samsung NX1 vs Samsung NX10: read noise comparison

Input-referred read noise at base ISO: Samsung NX1 3.1 e⁻ (ISO 100), Samsung NX10 22 e⁻ (ISO 100).

Samsung NX1

The Samsung NX1 was measured at 26 ISO settings from ISO 100 to ISO 51200. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 1.80 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 12800 don't change analog gain (digital push). Full well at base ISO is about 27,428 electrons; unity gain is around ISO 170.

Samsung NX10

The Samsung NX10 was measured at 6 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 3.32 DN, or 22 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 800 don't change analog gain (digital push). Full well at base ISO is about 27,109 electrons; unity gain is around ISO 660.

Samsung NX1 vs Samsung NX10 read noise table

ISO	Samsung NX1	Samsung NX10
100	1.803	3.317
125	2.129	–
160	2.585	–
200	3.204	4.287
250	3.837	–
320	4.595	–
400	5.540	6.681
500	6.681	–
640	8.282	–
800	9.987	11.551
1000	12.210	–
1250	15.348	–
1600	18.765	23.103
2000	23.588	–
2500	30.274	–
3200	37.271	43.411
4000	46.206	–
5000	59.714	–
6400	72.505	–
8000	93.701	–
10000	121.095	–
12800	151.167	–
16000	173.645	–
20000	215.269	–
25600	266.871	–
51200	508.463	–

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