Hi!
> You probably need a hyperfocal calculator. You could plug
> the numbers for the 28-135 into my JavaScript calculator:
> http://members.home.net/jul.loke
> or the one on Photozone:
> http://www.photozone.de/depth.htm
>
This is of course god method, but most (in not all) of Canon EOS cameras
have program named DEP. All you have to do is focus on most close subject,
then focus again on most distant one, and camera will automatically choice
correct aperture and focusing distance. It is much simpler!
Best regards:
Krzysztof Szkudlarek
mailto:[EMAIL PROTECTED]
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