Overview

The Carl Zeiss Planar T* 2/50 ZM is a compact, all-metal 50mm f/2 lens for Leica M mount, praised for its sharpness, contrast, and excellent build quality. Optically, it delivers tack-sharp center performance wide open, with well-controlled vignetting and chromatic aberrations, though it exhibits slight barrel distortion (1.5%) and some coma in corners. Its double-Gauss design produces a classic rendering with soap-bubble bokeh that some may find busy. Handling is generally excellent, but the aperture ring uses 1/3 stops and the lens lacks a built-in hood. Some copies may experience focus wobble or lubrication issues. It suits photographers seeking a high-performing, affordable alternative to the Leica Summicron, particularly for travel, landscape, and portrait work.