----- Original Message -----
From: "Jim Davis" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, February 24, 2001 10:44 PM
Subject: EOS EF 20-35 with extension tubes
> Well I want to shoot more closeup 'distorted' dogs photos, but I want
to
> keep their noses in focus, and I find minimum focus distance to be not
quite
> short enough with this lens for that purpose.
> Therefore I'm going to get an extension tube, or likely a set of
tubes.
> What I want to know is if the Kenko extension tube set will keep autofocus
> and proper aperture. Of course I want to use the extension tubes on my
other
> Canon lenses to enable closer macro work as well.
> Also, I'd like to know more about Canon's variable extension tube. How
> does it work, and is it worth having. I'd prefer not to have to change
> tubes, but would like a full range so I can go closer, closer, and real
> close :-)
> However the Kenko set is reasonably priced, and if they do the job,
> would be fine with me...
>
The "standard" set of three Kenko tubes (12,20 & 36mm) do not support
autofocus. The two that are sold separately (12mm and 25mm) do allow
autofocus. I have the 25mm tube and the 20-35 Canon lens; if you would like
me to do some specific testing drop me a note off of the list, but I don't
have any dogs ;^)
Tom P.
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