Sony RX100 VI vs Sony RX1R II: read noise comparison

Input-referred read noise at base ISO: Sony RX100 VI 3.2 e⁻ (ISO 125), Sony RX1R II 5.5 e⁻ (ISO 100).

Dual gain: Sony RX100 VI none, Sony RX1R II ISO 640.

Sony RX100 VI

The Sony RX100 VI (DSC-RX100M6) was measured at 23 ISO settings from ISO 80 to ISO 12800. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (125) read noise is 4.11 DN, or 3.2 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 3200 don't change analog gain (digital push). Full well at base ISO is about 11,975 electrons; unity gain is around ISO 100.

Sony RX1R II

The Sony RX1R II (DSC-RX1RM2) was measured at 34 ISO settings from ISO 50 to ISO 102400. Values are Bill Claff's (Photons to Photos) direct measurements from raw files.

At base ISO (100) read noise is 1.65 DN, or 5.5 electrons at the sensor. A second gain (dual gain) kicks in at ISO 640, cutting input-referred read noise by about 1.3 stop. From ISO 32000 up the camera is effectively ISO-invariant: raising ISO further doesn't meaningfully lower shadow noise. Full well at base ISO is about 52,658 electrons; unity gain is around ISO 330.

Sony RX100 VI vs Sony RX1R II read noise table

ISO	Sony RX100 VI	Sony RX1R II
50	–	1.625
64	–	1.853
80	4.170	2.129
100	4.659	1.647
125	4.112	1.853
160	4.691	2.189
200	5.389	2.514
250	6.320	2.990
320	7.413	3.681
400	8.938	4.317
500	10.411	5.278
640	12.641	2.639
800	15.242	3.227
1000	17.877	3.972
1250	22.316	4.891
1600	27.096	6.063
2000	31.779	7.311
2500	40.504	9.126
3200	50.563	11.314
4000	59.714	14.026
5000	73.517	17.268
6400	89.264	20.821
8000	112.206	26.173
10000	140.070	31.125
12800	177.294	40.504
16000	–	50.213
20000	–	63.558
25600	–	76.639
32000	–	51.625
40000	–	63.119
51200	–	81.008
64000	–	101.125
80000	–	128.890
102400	–	158.683

Popular comparisons

All cameras · Open the full tool