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Sony a380 vs Sony a450: read noise comparison

Sony a380DxO

The Sony a380 (DSLR-A380) was measured at 6 ISO settings from ISO 100 to ISO 3200. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (100) read noise is 1.44 DN. From ISO 100 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Sony a450DxO

The Sony a450 (DSLR-A450) was measured at 7 ISO settings from ISO 200 to ISO 12800. Values were derived by Bill Claff from DxOMark lab data.

At base ISO (200) read noise is 1.40 DN. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise.

Sony a380 vs Sony a450 read noise table

ISOSony a380Sony a450
1001.444–
2002.9691.404
4005.3522.028
80010.4833.340
160020.2526.727
320040.50413.269
6400–23.103
12800–49.867

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Data: Photons to Photos · © William J. Claff