Re: [ATM] Turned Down Edge

[Jim Burrows <burrjaw@earthlink.net>]

At 2004-07-13 21:20 -0400, Michael Lindner wrote:

>If you never touch the edge, but deepen the center, you are, in effect,
>turning the edge (without touching it).

Not if you consider changing the best focal length.  Run Sixtests (or any 
test reduction program that shows you surface deviations from parabolas 
with different ROCs) with whatever test data you have on hand, click 
"Target", fix "b" at -1, click the "R" window, then the down arrow a few 
times and watch the center deviation rise up - deepening the center will 
move the surface closer to that parabola.

         -- Jim Burrows
         -- mailto://burrjaw@earthlink.net
         -- http://home.earthlink.net/~burrjaw
         -- Seattle N47.4723 W122.3662 (WGS84) 

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