Hi everyone. I'm new to the forum, but I'm a pro bird photograhper. I thought you'd be interested in my review of the new Canon 600mm Version II. You can find it on my blog at: http://www.dougbrownphotography.com/blog/.
I caught a couple of those and corrected them. For all but 2 of the comparisons, where I compared larger to smaller apertures, the old version test frames are on the left and the new ones are on the right. Sorry about the confusion!