Large APS-C (22.7 x 15.1 mm) sensor Large sensor in Canon D30 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.
855g Carrying this weight all day may not be very comfortable for you.
Body Thickness 75mm With a thickness of 75mm,Canon D30 is not a pocketable camera for sure.