Originally Posted by neuroanatomist
@mmodica - Welcome to the TDP Forums! Nice to see another 'local' (I'm in the Boston area).
To continue the threadjack a bit:
No, but on an outing a couple of months ago (with Bill W.), I tried a 2x II Extender with my 100-400mm. It was a staring contest between a great horned owlet and a grackle. The owlet won, eventually (after a few dive-bombs by the aggressive grackle).
Focusing at 1280mm FF-equivalent (800mm on the 7D) was tough, even on a tripod with IS turned on (and with no IS, it would have been very, very tough!). I think the results of the 800mm combo turned out better than the equivalent shot at 400mm (from the same position) with the FoV cropped to match the 800mm shot:
[img]/cfs-file.ashx/__key/CommunityServer-Components-UserFiles/00-00-00-35-15/100_2D00_400_2B00_2x.jpg[/img]
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John
Thats a really cool shot. Did the 500mm get bumped up a notch or two on your wish list after that one?
Rick
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