Zeiss's M-mount 50mm f/2 — Planar formula for Leica rangefinders with T* coating.
The Zeiss Planar T* 50mm f/2 ZM is a manual-focus normal prime for Leica M-mount using the classic Planar optical formula. The ZM designation indicates Zeiss M-mount with T* multi-coating — an affordable 50mm for the M system.
Optically good — the Planar formula provides balanced rendering. T* coating controls flare. Sharp from f/4. The Planar character is different from Sonnar — smoother tonal transitions. Rangefinder coupled.
Leica M mount with 43mm filter thread. Compact and lightweight. Rangefinder coupled. T* coating. All-metal construction. The ZM 50mm Planar competes with the Zeiss C Sonnar 50mm f/1.5 — different character.
Available used at mid-range prices. Affordable vs Leica Summicron 50mm f/2. The Planar rendering differs from Sonnar — some prefer one over the other. For budget M-mount 50mm with Zeiss Planar character.