Hi Alberto, Thanks for your kind words. Processing my 7D images takes just about the same amount of time as processing my MIV images. Good luck with your equipment choices. If I lived in a place where the birds were small and distant and I had a pro body I would not hesitate to buy the 800 as my prime lens. If I had a 40D or 50D or a 7D I would opt for the 500 plus the 1.4X II TC for more flexibility. I will try to take a peek at some of your images soon. I just walked in the house after a long day of flying.

I will get started on the guide when I get back from Midway in mid-March. I prefer to handhold for birds in flight unless the birds and the lenses are really big