Thanks for that link! I didn't realize Bryan had the TCs mounted on the lenses. The 70-200 works well with the 1.4 at equivalent focal lengths to the 100-400, not quite as well, but not bad. I was excited to see the 150-500 Sigma and 80-400 Sigma (I was hoping that the 120-400 and 100-300 f/4 Sigmas were on there, but they weren't). But as soon as I looked at the comparisons I was sorely dissapointed. I guess there is nothing to compete seriously with canon's 100-400L! Thanks again, I'll keep looking at it.





Dan