Here is my dilemma I have a 70-200 mk II but want more reach. How does this lens with a TC compare to the 100-400. Or do I need to go with a longer faster prime. I can spend more if the quality is much better. I was waiting for the new 200-400 with TC but it is taking forever. What do you guys think? I will only be using the lens 5-10 times a year. Mostly for sports and some birds. I shoot a 5d II. Thanks in advance. I have never
Used a TC or longer lens than my 70-200 II.