F4 means you're in manual focus mode and probably tripod too because of slow shutter speed.

Herb....
----- Original Message ----- From: "Don Sanderson" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, June 22, 2005 5:16 PM
Subject: RE: TCs on digital


John I didn't see your original post but that's a fantastic shot!
I'm about to try the 1.7x on the SMCP 300/4 and see how it does.
Works great on my ATX 300/2.8 but that's a "tripod only" combo!
<grunt>


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