The Score of the RX10 II score is bit better than the RX10 and look very similar to RX100 M4 camera. Sony used same new stacked-type back-illuminated sensor in Sony Cyber-shot RX10 II as well as RX100 M4.
The RX10 II sensor score clearly out-performs the FZ1000 and Canon G3X, however the low-light performance of Canon G3X is noticeably good and better than Sony RX10.
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source – DxOMark Lab