At last an 'L' prime zoom that really warrants the 'L' tag
My previous 'L' zooms have been truly abysmal - [100-400 & 70-200 F2.8 'IS '].
Because of these 2 I've avoided all zooms, and bought 85,135,200 & 400 'L' primes which are all magnificent lenses, I'd never replace the primes, but this nice 'bog standard' 70-200 makes a great walking lens, when I need big lens aperture then IMO you really need a prime.
But sofar as this lens goes - forget the expensive 70-200's and get this and save yourself some money - you won't regret it. NICE ONE CANON !!