Tokina's constant f/2.8 standard zoom for Canon — the AT-X 28-70mm with focus clutch.
The Tokina AT-X 28-70mm f/2.8 AF for Canon EF is the Canon mount version of the constant-aperture standard zoom described in Nikon F under ID 4198. The constant f/2.8 and Tokina's one-touch focus clutch mechanism provide professional-grade features. A solid professional zoom from Tokina's film and early digital era.
Centre sharpness is good from f/2.8. The constant aperture provides consistent exposure. The focus clutch enables instant AF/MF switching. Build quality is excellent Tokina metal construction. Adequate for events, weddings, and general professional use. The Canon EF mount provides full electronic communication.
Canon EF mount. Filter thread is 77mm. Weight is approximately 810 grams. Build quality is outstanding metal. No IS. The focus clutch is the ergonomic highlight. The 28-70mm f/2.8 specification is professional-grade. Superseded by modern alternatives from Sigma and Tamron.
Very affordable. Check focus clutch and AF. A functional constant f/2.8 at budget pricing for Canon. The focus clutch differentiates from competitors. Superseded but functional. Best at very low prices for Canon shooters wanting budget constant f/2.8.