Tokina AT-X 16-28mm F2.8 PRO FX Review

Much bigger than most lenses in the group, and at more than twice the weight of some, the Tokina is a chunky lens. That's because while all the other lenses in the group are designed solely for use on cameras with APS-C or Four Thirds sensors, the Tokina is fully compatible with full-frame cameras. Essentially, it's designed as a full-frame ultra-wide-angle zoom, so why would you want it on your APS-C camera?



Link: Techradar