an imaging device has a plurality of predefined regions of interest . the predefined regions of interest may be selected or deselected . image data from selected regions of interest is transmitted to a host . in some embodiments the regions of interest comprise tiles . a set of selected tiles may be identified by a bit vector . an example application provides a digital camera configured to provide predefined regions of interest . the camera may be configured to permit a host to select or deselect the regions of interest .