Panasonic AW-UB10 has a Four Thirds sensor with dimensions of 19 x 13mm and sensor area of 247.00mm2.
It is 104% smaller than the average Mirrorless sensor in its class. In cases where all the other parameters are the same between two cameras, the one with the larger sensor collects more light per pixel and performs better (less noise) in low light / High ISO conditions). Larger sensors also give the photographer more control on the depth of field.
Read our detailed Panasonic AW-UB10 Review