Tokina AT-X 12-28mm f/4 Pro DX - unknown Mount

The Tokina AT-X 12-28mm f/4 Pro DX is a wide-angle zoom lens designed for APS-C sensor DSLRs. It offers a versatile focal range equivalent to roughly 18-42mm in full-frame terms, making it suitable for landscape, architectural, and travel photography. The lens features a constant f/4 aperture throughout the zoom range and employs a Silent Drive-Module (SD-M) for quieter autofocus operation. It also includes Tokina's One-Touch Focus Clutch mechanism for switching between auto and manual focus. When purchasing used, check the focus clutch mechanism for smooth operation, as these can sometimes become stiff or gritty. Inspect the internal glass for dust or haze, which can affect contrast in backlit scenes. SDS verifies the autofocus accuracy across the zoom range and ensures the constant aperture iris functions correctly without sticking. The barrel is robust, but check for significant wear on the rubber grips.