Compact Body Compact body of Leica Q makes it much easier to carry it with you all day.
Large Full frame (36 x 24 mm) sensor Large sensor in Leica Q ensures a good low light image quality compared to smaller sensor, and it also provide shallow depth of field and a nice blurry background when needed.
RAW shooting capability RAW files contains much more color information compared to JPEGs, and gives you more room for post processing without significant quality loss. They provide wider dynamic range and option to recover shadow and highlight clipping to some degree.
640g Carrying this weight all day may not be very comfortable for you.
Body Thickness 93mm With a thickness of 93mm,Leica Q is not a pocketable camera for sure.