TREN

Panasonic Lumix DMC-GX8 vs Panasonic Lumix DMC-GX85: read noise comparison

Input-referred read noise at base ISO: Panasonic Lumix DMC-GX8 3.8 e⁻ (ISO 200), Panasonic Lumix DMC-GX85 4 e⁻ (ISO 100).

Panasonic Lumix DMC-GX8

The Panasonic Lumix DMC-GX8 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 (200) read noise is 0.95 DN, or 3.8 electrons at the sensor. From ISO 1600 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 15,850 electrons; unity gain is around ISO 800.

Panasonic Lumix DMC-GX85

The Panasonic Lumix DMC-GX85 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 0.55 DN, or 4 electrons at the sensor. From ISO 1000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Settings above ISO 6400 don't change analog gain (digital push). Full well at base ISO is about 28,843 electrons; unity gain is around ISO 730.

Panasonic Lumix DMC-GX8 vs Panasonic Lumix DMC-GX85 read noise table

ISO	Panasonic Lumix DMC-GX8	Panasonic Lumix DMC-GX85
100	0.877	0.555
125	1.007	0.637
160	1.197	0.753
200	0.946	0.796
250	1.117	0.847
320	1.338	0.986
400	1.591	1.181
500	1.905	1.376
640	2.297	1.659
800	2.313	1.919
1000	2.789	2.297
1250	3.317	2.809
1600	4.000	3.411
2000	4.823	4.347
2500	5.856	5.426
3200	7.210	6.681
4000	9.000	8.282
5000	11.004	10.126
6400	13.548	12.641
8000	17.148	16.450
10000	21.857	20.252
12800	27.284	25.107
16000	17.388	32.672
20000	21.556	39.671
25600	27.665	50.213

Popular comparisons

All cameras · Open the full tool