Planning a trip out to Yellowstone in a couple of months. Considering trading my 70-200 2.8/is for either a 100-400 or one of the Sigmas(50-500, 150-500 or 120-400). Thoughts. I shoot a little of everything and alot of sports, but mainly use my 300/2.8 for that. I know I could add my 1.4 tc to the 300, but that would be very heavy to carry all day, since I would have to have a few more lens to go with it. With a large/long zoom, I'm thinking just take it and a couple smaller lens in a small bag.
I will miss the 70-200 and could consider an older 50-500 if could find one and not have to sell, but I find I rarely use the 70-200 as I like primes a little more and find the 85 works great for portaits.
Thoughts and thanks