Tom Pfeiffer wrote:
> 
> Ray, I have the 25mm tube.
> 
> Tom P.
> 
> ----- Original Message -----
> From: "Ray Amos" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Saturday, March 17, 2001 10:15 PM
> Subject: Re: EOS Extension Tubes - Canon vs Kenko.
> 
> > Tom Pfeiffer wrote:
> > >
> > > My Kenko has 5 + 3 contacts. I've used it on Elan IIe, IX, 650, 1n and 3
> > > bodies with L and non-L lenses with no problems.
> >
> > > From: "Ray Amos" <[EMAIL PROTECTED]>
> > > Subject: Re: EOS Extension Tubes - Canon vs Kenko.
> > >
> > > > The Canon 12mm extension tube has 5 + 3 contacts and the 25mm has 8 +
> 3
> > > > contacts.  I've been told the Kenko's have less.  The new ones may be
> > > > 100% compatible.
> >
> > Tom,     What mm is the ext. tube you're referring to?  If it's the
> > 12mm, then they're probably identical.     Ray Amos


So the 25mm ext. tube from Canon has three extra contacts over the
Kenko.  I don't know what that means.  From what I've heard there is no
difference.  So says George Lepp and others.     Ray Amos
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