1. A scan bar for scanning a media sheet in an image scanning device, the scan bar comprising: a sensor arrangement comprising a first sensor region and a second sensor region; and a lens arrangement capable of focusing light reflected from the media sheet onto the sensor arrangement, wherein each of the first sensor region and the second sensor region is capable of generating image data corresponding to the media sheet from the focused light received from the lens arrangement, and, wherein image data generated by the first sensor region is of relatively higher resolution than image data generated by the second sensor region.