I had thought this was a purchase I was going to make a while ago, but it did not happen. Hope to make it happen this year. As you can see, I'm planning on leaving my EF 70-300mm to one of the following two choices:





1) EF 70-200mm f/2.8 L IS USM + 1.4 extender


or


2) EF 100-400mm f/4.5-5.6 L IS USM





If there is a third option, please let me know.





Thanks in advance,


Eric





PS: I'm currently using an EOS 40D. My primary interest is wildlife photography. I'd originally thought of option 2, but I think option 1 might be better as I'll be getting a much faster lens which in my mind will offset the lack of reach I'd get as opposed to option 2 (my original choice). Any input appreciated!