Wow, 100+ comments so far, seems a popular unit. Have been using this for more than five months now (first rented for test,,) For me the main reason is the excellent sharpness at F/2.8 @ 70mm.
Vibration Control works fine with videos, does not work fine with fps shooting (I guess the stabilizer has no time to find a "stable" position between shots). Since the FF body is heavy and stable, as well as my hands, the VC is always turned off (except videos). At a positive size, VC works fine at single shot mode (so no continuous).
CA sometimes a problem at corners with high contrast (direct sunlight), even at F/9. Depends on certain situation (angle, subject) though.
Corners are softer than on Canon 24-70 /2.8.
AF is silent, smooth, fast, accurate - could not dream of better.
Glass is so good that it outperforms 21mpix easily. Would like to hear from Nikon D800 users - has anyone had a chance to test this lens with 38mpix?
Other than that, the lens is a real honey.
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