Tokina's constant f/2.8 standard zoom for Nikon — the AT-X 28-70mm Pro with focus clutch.
The Tokina AT-X 28-70mm f/2.8 Pro is a full-frame constant-aperture standard zoom for Nikon F mount. The constant f/2.8 and Pro designation indicate professional-grade optics. Tokina's one-touch focus clutch mechanism provides instant AF/MF switching. A solid professional standard zoom from Tokina's film and early digital era.
Optical performance is decent. Centre sharpness is good from f/2.8. The constant aperture provides consistent exposure. Tokina's focus clutch is the ergonomic highlight — instant AF/MF switching by sliding the focus ring. Build quality is excellent with Tokina's characteristic metal construction. The 28-70mm covers the essential standard zoom range.
Nikon F mount. Filter thread is 77mm. Weight is approximately 810 grams — heavy for a standard zoom. Build quality is outstanding Tokina metal. No image stabilisation. The focus clutch differentiates this from competitors. The 28-70mm f/2.8 specification is professional-grade.
Very affordable on the used market. Check focus clutch and AF. A functional constant f/2.8 standard zoom at budget pricing. The focus clutch is genuinely useful. Superseded by modern alternatives. Best for photographers who want the focus clutch ergonomics and constant f/2.8 at minimum cost.