Ok what happens when you put a nikon 105mm f2.8 macro lens on a canon 550d which has a cropped sensor of 1.6, You get a very interesting close up video.
But what happens when you then go for the MOVIE CROPPED MODE where it uses only the central 640 x 480 pixels? you get an extra 7 times zoom.
check this video.
no in camera cropping or moving of the lens and this is how close you can get with this combo!
When you add up all the cropping you get an equivalant focal length of 1176mm! eye ball photography here I come!