After the busy holidays I finally got time to shoot with my new 100-400 II. Went to nearby LA Zoo with my 7D + 100-400 II attached to my monopod. This is the biggest and heaviest combo I've ever used and I found I needed to work more slowly than usual.
My initial results were encouraging. My lack of photography technique with the new lens was the biggest shortcoming, certainly not the new 100-400 II lens. My impression is that it is the sharpest lens I now have, which is encouraging given the cost.
I've attached two shots taken at the LA Zoo, one of a Sumatran tiger and the other of a Western Lowland Gorilla.
Details for tiger (uncropped) -> 400mm (equivalent 640mm w/7D crop) at f/8, 1/80 sec, at ISO 800
Details for Gorilla (cropped) -> 400mm (equivalent 640mm w/7D crop) at f/8, 1/640 sec, at ISO 800
I chose ISO 800 with f/8 aperture for both shots to reduce the shutter speeds to hand-holdable levels, believing I'd get sharper pictures using such a big/heavy lens (for me) for the first time.
Overall I was satisfied enough to share with this audience. Your comments are welcome.