Overview

The Tamron 24mm F2.8 Di III OSD is a compact, lightweight prime with a unique 1:2 macro capability. Optical strengths include good sharpness and flare resistance, but it suffers from heavy barrel distortion (~5%) and vignetting (~2.6EV at f/2.8). Build is plastic with a metal mount and weather seals, though the focus ring feels cheap and autofocus is slow but accurate. It suits landscape, nature, and macro enthusiasts on a budget.