At 12:31 PM 5/24/01 +0000, John A. Lind wrote:
[snip]
If posting images were not considered poor form on a mail list, I would
attach some graphs of what happens to the "Circle of Confusion" as
distance increases behind the critical focus points having the same
magnification for different focal lengths. If the background is very
close to the rear of the DOF, changing focal length won't make much
difference. If the background is relatively far from the rear of the DOF
it can make a difference. The farther it's behind the rear of the DOF,
the more difference it makes.
John:
You could always post such images to a Web page, and then include a link in
your e-mail. Those who are interested can follow the link -- the rest can
ignore it at their leisure. ;-)
Garth
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