Canon 70-200 f4 L with 1.4 extender for bird photography
I shoot a 7d and am dabbling in bird photography (I've shot landscapes, flowers, and waterfalls for years). The 70-200 f4 L needs a bit of help for birding. I know this setup isn't as good as a standalone lens such as the 100-400 or the Sigma 150-500. However, the 1.4 extender is much less expensive and for a bit of birding, I'm wondering if it would be adequate. I would really be interested in hearing from anyone that has used this configuration....especially for birding.
Tony in SC