Panoramic Photography (contd.)
The most common techniques in
panoramic photography are "scanning"
and "fixed lens".
With the scanning technique the lens is
rotating around its rear nodal point (the
optical point from which the focal length
is measured) opposite a curved film
plane.
This method gives a very wide angle of
view, similar to that of the fisheye lens,
but  without the extreme distortion of
lines within the image.
In a fixed lens panoramic camera, a wide
view angle is achieved optically by the
lens.