Superlative g master quality in the world s lightest1 400mm f2.8 Lens uses two newly developed xd extreme dynamic linear motors for fast precise autofocus to take full advantage of the world s fastest cameras2 Reaching speeds up to 20fps with the 24mp a9 and up to 10fps with the 42.4Mp a7r iii and 24.2Mp a7 iii.
