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 is a constant-aperture standard zoom from Tokina's AT-X professional line for Canon EF mount, providing f/2.8 coverage across the standard zoom range for Canon EF-mount film and digital DSLR bodies. The AT-X designation marks it as Tokina's professional tier product.
The lens delivers a constant f/2.8 aperture from 28–70mm with Canon EF electronic coupling for autofocus and metering, an internal zoom mechanism, and full-frame image circle coverage. AT-X professional build quality features metal barrel construction and robust optical assembly.
It served as a cost-effective alternative to Canon's EF 28-70mm f/2.8L for Canon EF users seeking constant-aperture performance in the standard zoom range without the premium price of the Canon L variant. The 28–70mm range covers the most practical portion of the standard zoom envelope and was a popular choice for event and wedding photographers on Canon systems.
Test Canon EF autofocus for speed and accuracy across the zoom range. Inspect zoom and focus rings for smooth, resistance-free travel. Check internal elements for dust, haze, or fungal growth common in lenses of this vintage. Examine the Canon EF mount contacts for corrosion or wear.