Considering Sigma 300mm f/2.8 + TCs for action shooting - Nikon (D300)

This was shot from a barstool in a bar through double pane glass I know it's ugly, but shows how well it performs with a 2x converter through plate glass can be.

7D, 600mm, f5.6, 1/125s, ISO 400

Cheers

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www.JonSmithers.com GtoJon -
Taken any photographs lately?
http://www.jonsmithers.com/postedimages/EagleTeal-Zoo.jpg