In article , philg@murren.ai.mit.edu says...

>If you are interested in examples of using a fisheye lens and also a
>review of one particular lens, a Canon EOS 15, then look at
>http://photo.net/photo/canon/15-fisheye.html
> -- Philip Greenspun

The views are interesting... (the one of the dog on the grass with the buildings in the background was a good demonstration of what I was
pratting on about a ways back in posts on how we see - notice that
though the super wide lens is pointed down, building verticals
remain roughly vertical; and though the lens covers a VERY wide angle
of view, people near the edge of coverage look normal - not proof that
we see in fisheye perspective, but indications.... [the proof is in
seeing the curvature, which is not hard when you know where to look]).
The 6mm f2.8 Nikkor views were interesting, also (I used to own a small
6mm f5.6 Nikkor, and miss it!), but I was wondering why you chose that
lens, rather than the far cheaper and smaller 8mm f2.8 Nikkor (or the
far, far smaller and cheaper 7.5mm f5.6 or 8mm f8 Nikkors, or the 7.5mm
Canon FD - all 180 degree lenses (and the Sigma 8mm f4 is a relatively
cheap and good alternative, but it shows less than 180 degrees when
stopped down, unfortunately). Just a note from a fisheye-lover...;-)
Hope This Helps