Just like the Canon lens, but a little better
An outstanding lens I'm sure.
Still seems strange to put a TC in a lens (to add flexibility) on a zoom (which is already flexible), makes the lens very complex. Why not just make it a 200-600/4-5.6 zoom, would be simpler. I guess that is how a lot would use it, but then sports shooters might want the constant apertures, and it starts to look like a consumer zoom
I wonder why they don't build a TC into their super primes like the 400/2.8?