For a lens costing around £600, I would normally expect better performance at maximum aperture. Saying that, the sharpness that is possible with the lens stopped down comes close to redeeming this lens. If you intend to use this lens stopped down much of the time, require a filter thread and don't want to spend more than £600, then this could be the lens for you. If, however, you can see yourself using apertures brighter than f/5.6, then this lens is probably best avoided.

Das Tokina At-X Pro 4/17-35 mm FX liefert besonders am APS-Sensor und in der Verzeichnung hohe Leistungen ab, an der Vollformatkamera sollte abgeblendet werden.