On Fri, 13 Jul 2001 18:24:14 GMT, "Paul Tauger"
[...]
>The differences between the 11 and the 20 were quite dramatic (note, too,
>that the 20 has superior optics to the 11, as well as a larger lens).
[...]
The (slightly) larger lens is due to the FL's being
longer... The lenses appear otherwise to be similar.