alpereninyeri
TREN

Olympus OM-D E-M5 Mark II vs Olympus OM-D E-M5 Mark III: read noise comparison

Input-referred read noise at base ISO: Olympus OM-D E-M5 Mark II 6.4 e⁻ (ISO 200), Olympus OM-D E-M5 Mark III 4.6 e⁻ (ISO 200).

Olympus OM-D E-M5 Mark II

The Olympus OM-D E-M5 Mark II was measured at 23 ISO settings from ISO 100 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (200) read noise is 0.97 DN, or 6.4 electrons at the sensor. From ISO 800 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 3200 don't change analog gain (digital push). Full well at base ISO is about 25,607 electrons; unity gain is around ISO 1340.

Olympus OM-D E-M5 Mark III

The Olympus OM-D E-M5 Mark III was measured at 23 ISO settings from ISO 64 to ISO 25600. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (200) read noise is 0.78 DN, or 4.6 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 22,517 electrons; unity gain is around ISO 1170.

Olympus OM-D E-M5 Mark II vs Olympus OM-D E-M5 Mark III read noise table

ISOOlympus OM-D E-M5 Mark IIOlympus OM-D E-M5 Mark III
64–0.883
1000.966–
2000.9660.779
2501.1250.877
3201.3291.000
4001.0571.197
5001.2661.414
6401.4951.647
8001.8152.028
10002.2042.395
12502.7132.928
16003.3643.555
20004.1703.294
25005.0633.891
32006.2774.790
40007.8355.696
500010.0567.111
640012.6418.938
800015.88911.236
1000019.97314.320
1280025.45717.630
1600031.77922.785
2000039.39728.443
2560050.21335.753

Popular comparisons

All cameras · Open the full tool

Alperen Kılıç · Read Noise

Data: Photons to Photos · © William J. Claff