Staszek wrote in post #10543432
You think a two prime setup ( I can also use my 50/1.4 for wider shots) would be better than the 70-200/2.8? Is the IQ of the 200/2.8 better than that of a 70-200? What's the reasoning to get that instead of the zoom besides price? I was thinking the IS would be nice for all-around use. I can use it for much more than just sports. I also like the way IS steadies the viewfinder, at least on my 24-105
Every lens has a tradeoff... sharpness, cost, size/weight, AF speed, durability, resale value. If I had to pick one lens for a sports photographer, I'd have to pick the 70-200/2.8L - it's not a perfect solution... it's great 90% of the time, but too short for field sports, f/2.8 can be too slow for indoor sports.
If we all had unlimited budgets (or a employer with a nice equipment closet), we'd have the complete arsenal of lenses.
The 70-200/2.8L is a great starting point. If you want to save a few bucks, look into the Sigma or the prime. If you can spend a little more, then yes, the IS might come in handy too.
Want more reach and willing to limit yourself to daylight shooting? Try the 100-400L or 50-500 Bigma.
I had the 70-200/4L non-IS as my first L. Was disappointed, based on the great reviews. So I upgraded to the 4L/IS and absolutely loved it. But then I got into Sports and f/4 wasn't cutting it and I was at 200mm 90% of the time. So I found the 200/2.8L prime and loved it... small, light, easy to handhold, built-in hood, fast, and very sharp. But for those 10% of the times that the action came close and I couldn't zoom out, I'd get frustrated at being forced into shooting too tight (is there such a thing?), so I sold it. Now that I'm used to other primes, I think I should've been more patient. Eventually I traded my 4L IS for a 70-200/2.8L non-IS and it's been a great workhorse. I'm willing to trade off a little size/sharpness for the flexibility of the zoom range.
And then I came across the 200/1.8L and absolutely love it. But it's a beast. I use the 1.4x TC on it half the time, to get 280mm at f/2.5 - but I still wanted something longer, so I started hunting for a 400/2.8, but found a 600/4L first - again, love it, but it's even a bigger beast.
Bottom line, I don't think there is a perfect solution. I don't even think there's a perfect 2 lens combo. I don't think there's a recommendation that applies for all shooters. Everyone has different styles and budgets, plus there are variances between lenses.
But instead of renting dozens of lenses, I've found that they hold their value well, so buy a couple and sell them when you're ready to mix things up to target a different need.