6-exposure panorama of the Rocky Mountains from a ridge near my home:
Morning Mt. Evans Panorama by
dcstep, on Flickr
I hand held this with the 5D MkIII, the 500mm/f4 and the 1.4X TC. The flattened and compressed jpeg file is 51MB. If you click on it you can go to my Flickr site and see it in a 2048 pixel size.