In article <4u7f0r$5e@news.nstn.ca>, chefurka@fox.nstn.ns.ca says...
>In article <4u5c1r$c31@newsstand.cit.cornell.edu>, d_ruether@hotmail.com
>(Bob Neuman) says:

>>Ah, you have asked the basic question! (One that I thought I had
>>answered in various other posts in this thread, but maybe it is
>>time to draw it all together in one place.)
>[much great stuff snipped]

>Bravo! Thanks for that most cogent elucidation :-)
>I've been in photography for 30 years, and I've never seen this
>conundrum explained so well. You have shone a blinding ray of
>understanding onto the cornea of my ignorance.
>Way to go.
>Paul Chefurka

Gee, t'anks, 'twern't nuttin'.....;-) It took a couple of days
to bang it into shape, and there are still a couple of loose
ends, but it was fun! Hope there aren't TOO many folks out
there with a weird look in their eyes as they practice
full-field vision (and explore their fisheye view of
the world ;-)......
Hope This Helps