Overview

The Carl Zeiss Biogon T* 2.8/25 ZM is a mid-speed wide-angle lens offering excellent optical performance with sharpness corner-to-corner and minimal aberrations, though some find its rendering almost too clinical. Build quality is very good with all-metal construction, but the convex focusing nubbin is a common ergonomic complaint. It is compact and lightweight, focusing to 0.5m, though Leica M cameras limit this to 0.7m. The lens suits photographers wanting a high-performing, affordable alternative to Leica's 24mm options, especially for documentary or environmental portraiture.