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Believe it or not the 80-200/2.8 is a very good choice... some studio work I did back in March of this year. Took this shot during a lull in the posing.
Sample image - title is "Waning Enthusiasm":
100% crop:
Sometimes, but not always, my FA* 80-200/2.8 is a fantastic portrait lens... you just stand a little further away...
Cheers,
Marc