This afternoon, I continued testing out the 2x extender on the 70-200. Trying to get some good bald eagle pictures - but they were not being too cooperative today, even though there were 15 or so of them. They were out numbered by the 200+ Canada geese, so ended up doing most of my tests on geese! Thanks for looking.

60D, 70-200 2.8vii @ f/5.6 with 2x iii ext at 400mm 1/1000 ISO 100
http://www.flickr.com/photos/4mozasmiles/6866925673/