TREN

Olympus OM-D E-M10 Mark II vs Olympus OM-D E-M10 Mark IV: read noise comparison

Input-referred read noise at base ISO: Olympus OM-D E-M10 Mark II 6.3 e⁻ (ISO 200), Olympus OM-D E-M10 Mark IV 3.9 e⁻ (ISO 200).

Olympus OM-D E-M10 Mark II

The Olympus OM-D E-M10 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 6.3 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 12800 don't change analog gain (digital push). Full well at base ISO is about 24,773 electrons; unity gain is around ISO 1290.

Olympus OM-D E-M10 Mark IV

The Olympus OM-D E-M10 Mark IV 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 0.86 DN, or 3.9 electrons at the sensor. From ISO 2000 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 17,603 electrons; unity gain is around ISO 920.

Olympus OM-D E-M10 Mark II vs Olympus OM-D E-M10 Mark IV read noise table

ISO	Olympus OM-D E-M10 Mark II	Olympus OM-D E-M10 Mark IV
100	0.979	0.807
200	0.973	0.865
250	1.149	1.000
320	1.338	1.181
400	1.072	1.414
500	1.283	1.705
640	1.526	2.056
800	1.866	2.479
1000	2.282	3.010
1250	2.751	3.605
1600	3.411	4.438
2000	4.199	4.317
2500	5.134	5.278
3200	6.409	6.364
4000	8.056	7.890
5000	10.126	9.580
6400	13.086	12.295
8000	16.111	15.562
10000	20.252	19.427
12800	25.992	24.761
16000	32.447	30.484
20000	40.504	39.124
25600	50.914	49.180

Popular comparisons

All cameras · Open the full tool