i don't know about the XT-2..but compared to the Leica SL and Leica T...i can get gorgeous night street shots under ISO 400 as low as 1/25th [no people moving] and with people i prefer minimum 1/125th...at ISO 600 [at f1.4 or f2] the IBIS is quite amazing the slight noise is quite pleasing..almost looks film like and quite random unlike other cameras that seem to have a more or less fixed noise pattern in low light slowly getting used to this sensor..usually don't need luma NR, very little chroma NR, barely any sharpening..and all NR/sharpening is OFF in camera...shooting only RAW....so quite a deviation from the usual-night-available-light-street-shot-process ive found only 2 irritating things but not biggies...the "Q" button keeps getting pressed by mistake when i click the real dial to zoom and the EVF is nice at night, but in bright sunlight seems to jitter a bit when zoomed in. the DR setting is very nice