-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of F. Craig
Callahan
Sent: 05 May 2001 01:11
To: [EMAIL PROTECTED]
Subject: Re: EOS Canon 2X TC with 100-400/4.5-5.6L IS Lens.
Consider first that you will have in effect a 200-800/6.7-11 lens. Depending
on
what body you're using, you're going to lose AF capability somewhere around
300-400mm (I'm sure kind soul here can help with the exact figures).
No.
There will be no AF possible.
2 stops on top of f4.5 is in excess of the f8.0 limit for AF.
Now, if it had been an f4.0 lens at 100mm, you would've at least have
retained
AF at the short end of the lens with a 2x TC.
Paul.
N51�18'57"
W00�46'14"
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