A scan bar for scanning a media sheet in an image scanning device and a method for scanning the media sheet in the image scanning device are disclosed. The scan bar comprises a sensor arrangement and a lens arrangement. The sensor arrangement comprises a first sensor region and a second sensor region. Light reflected from the media sheet is focused by the lens arrangement onto the sensor arrangement. 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 for scanning the media sheet. The image data generated by the first sensor region is of relatively higher resolution than image data generated by the second sensor region.