Thinking About a 300mm Lens
I am thinking about possibly jumping back into the lens wars.
After using a Canon 400mm f/5.6L for birds and longing for a 500mm f/4L IS which I just couldn't seem to make happen, I made a move to macro, flowers and other wildlife and have been spending more time in the past six months or so photographing nature other than birds and enjoying it immensely.
This got me to thinking. I have the 70-200 f/2.8L IS and the 400 mentioned above. I started thinking about a 300mm for flowers, butterflies and other wildlife and nature photography. If it was just that, I think I would be happy with Canon 300mm f/4L IS. But I still like to do bird images. And I still feel I need to go longer than 400mm. (I should point out that I am using crop cameras - 30D and Rebel XT.) So I am thinking that the 300 f/2.8L IS might be the better choice - without TC for the stuff mentioned above and with a 2x TC for birds. That would give me 600mm at f/5.6 and I should be able to keep autofocus.
Does that make sense? Is the f/2.8 too bulky for flowers, butterflies and such? Any other advice?
Thanks.