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Samsung NX210 vs Samsung NX500: read noise comparison

Samsung NX210DxO

The Samsung NX210 was measured at 8 ISO settings from ISO 100 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 0.97 DN. From ISO 6400 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Samsung NX500

The Samsung NX500 was measured at 25 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 1.78 DN, or 3.4 electrons at the sensor. From ISO 2000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 31,154 electrons; unity gain is around ISO 190.

Samsung NX210 vs Samsung NX500 read noise table

ISOSamsung NX210Samsung NX500
1000.9731.778
125–1.972
160–2.497
2001.0642.908
250–3.411
320–4.170
4002.4795.169
500–6.148
640–7.674
8005.8979.514
1000–11.158
1250–14.123
160012.99617.388
2000–20.821
2500–26.538
320031.77933.128
4000–40.504
5000–53.076
640054.19265.345
8000–79.893
10000–103.968
12800101.829129.787
16000–152.219
20000–187.403
25600–230.720

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Data: Photons to Photos · © William J. Claff