I mostly shoot handheld, but used a tripod and Wimberley head to get this manually focused shot of a Northern Shoveler at 2080mm equivalent.
Canon 1Dmk3 + 800mm f/5.6 IS lens + 2x TC, 1/640s, f/11, ISO 400, EV -0.67
http://i594.photobucket.com/albums/t...R9275small.jpg
So far, I have been happy with the image quality of my 2x teleconverter.
Ed
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http://www.sfbbo.org/support/clickoff/clickoff.php
http://www.doubleexposure.com/de_assignments/smallworld/07.html


