Overview

The Porst WW-Macro 28mm f/2.8 X-M GMC is a wide-angle prime with 1:4 macro capability, offering a long focus throw for close-ups. Optically, it is a rebranded Japanese lens of unclear origin; no specific optical strengths or weaknesses are noted in the excerpts. Build includes manual aperture and focus rings, plus an auto aperture button. Handling on mirrorless cameras requires an adapter with aperture control, but adapters are less common due to the mount's scarcity. It suits users seeking a compact macro-wide for adapted mirrorless use, but dSLR adaptation may need corrective optics.