Large APS-C (23 x 15.5 mm) sensor Large sensor in Fujifilm S1 Pro 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.
Large Body Even the smallest lens attached to this body will be a burden to carry everywhere with you.
820g Carrying this weight all day may not be very comfortable for you.
Body Thickness 80mm With a thickness of 80mm,Fujifilm S1 Pro is not a pocketable camera for sure.