QUOTE (kjkahn @ Jan 18 2007, 04:45 PM)
Thanks for the reply. The problem is that in certain situations, I don't have time to even find the animal in the viewfinder. e.g. I was trying to shoot a whale. It would surface for just a few seconds, each time in a different location. I never managed to see it in the viewfinder (looking through a 400mm lens with 1.3 crop factor).
I know, it is a problem. And then, if you manage to find the animal in your viewfinder, you either get only part of it, or the focus is off, or the image is blurred because the camera isn't steady.
What you could do is use a zoom lens and keep it zoomed wide until you see the animal, then zoom in for the shot. The canon 100-400 would work well for that for example. Keep it around 100-200mm then zoom in all the way when you see something you want to photograph.