Thanks everyone for the input. I've decided to get the Canon 100-400 L. For awhile, I was sure I was going to get a prime, either the 300 f/4 L or 400 f/5.6. After cooling my head for a few days, I came to the conclusion that the Canon 100-400 L is the right choice for me. Granted, the primes are sharper and produce great photos, but the sensible side of me says I will get more keepers and have more fun with the zoom. Also, I don't know where I will be taking this lens over the next few years and I figured I needed something versatile.
What really clinched it for me was a photo exhibit I saw in Charlotte Airport a few days ago. A local nature photographer has an exhibit of various wildlife photos on display. He has wolves, eagles, and zoo animals. His prints were blown up to about 20x16. For weeks I had been walking by these photos and admiring how great they looked. But, this time, with a bad case of lens purchase madness, I stopped and took a real close look at the sharpness. You know what? A lot of his photos weren't any sharper than the examples you guys have been posting with the 100-400 L. And, they were for sure not as sharp as some examples I've seen with the Canon telephoto primes. What made this photographer's photos nice was the composition and lighting. I had to ask myself, how sharp is sharp enough? Sharpness is only part of the great photo equation and the 100-400 is sharp enough for me.
Ah... I feel better now.
Too bad B and H is closed today. There are too many Jewish holidays. The same thing happened when I ordered my Sigma 70-200.
Thanks again
Dave

Oh well, they saved we a ton of $$$ once again.


