Not without it's flaws.
As with all of Fuji's lenses, the aperture seems a little loose to me, and I wish that the apertures were marked on the body akin to the 35mm f1.4. But the optics are superb. Out of focus rendering is beautiful and the focus "hot spot" is very sharp. This kind of lens is rarely used in a situation that requires border sharpness, but my copy seems to be fairly sharp from edge to edge. I have read DP Review's complaint that the borders are soft due to in camera processing to remove pincushion distortion. [I suspect that this is more of a problem at the wide end of the zoom.] Alas this seems to be the norm for most mirror-less cameras these days. But on the whole I find that for the price, it is about the best Telephoto that money can buy for a mirror-less system.