Tokina 28-80mm f2.8 AT-X PRO for Canon
(From Tokina lens literature) You asked, we listened. You asked for lighter weight in the lens that you used most often, yet you wanted the same famous AT-X quality and durability. Tokina's answer is the AT-X 280 AF PRO. To maintain strength, duraluminum alloy and a chrome plate brass mount plate was used as its foundation. Then modern composite material formed the outer barrels, focus and zoom rings. This result was a lens that weighed less than its predecessor, but maintained AT-X quality. SD glass, and inclusion of an all glass molded aspherical element in its two aspheric optical design completely corrects all aberrations, providing high contrast and sharpness right to the edges. The minimum focus distance is just 19.7 inches (50 cm) throughout the entire zoom range, which allows close up shots at a magnification of 1:5 at the 80 mm setting. Tokina has sped up auto focus and improved handling by incorporating a One-Touch Focus Clutch Mechanism which allows the focus ring to be moved from AF to manual focus with just a quick snap movement of the manual focus ring. No other AF/manual switches on the camera or lens need to be set.