Sorry if this is a repeat thread. I thought I saw a thread on this subject a few weeks back, but now I can't find it.
Has anyone directly compared these two lenses (Canon 70-200 f4 L vs Sigma 70-200 f2.8 EX)? They are almost the same price.
I am trying to decide which one to buy.
There are some great reviews of the Sigma and it is a stop faster. One review I read says the Sigma 70-200 f2.8 is better than the Canon 70-200 f2.8 L ! Do these people work for Sigma? Here is a link to the review http://www.naturephotographers.net/mg0600-1.html
Help me make a rational decision. And please don't try to talk me into the Canon 70-200 f2.8 L. I'm not that rich .