The Zeiss Distagon T* 21mm f/2.8 ZF.2 is a premium manual focus wide-angle prime lens designed for full-frame and DX-format Nikon F-mount DSLRs and film cameras. This secondhand lens combines exceptional optical quality with professional-grade build, featuring the legendary Zeiss Distagon retrofocus design that delivers outstanding corner-to-corner sharpness, minimal distortion, and rich colour fidelity across the entire focusing range. The advanced optical formula includes floating elements and anomalous partial dispersion glass that suppresses field curvature and chromatic aberrations. Every lens surface is treated with iconic Carl Zeiss T* anti-reflective coatings to maximise light transmission and eliminate internal flare. The ZF.2 series integrates an electronic CPU interface that enables full compatibility with modern Nikon DSLRs, supporting auto-exposure metering, EXIF metadata transfer, and in-camera focus confirmation. With its fast f/2.8 aperture and precise manual focus mechanics, this lens excels at landscape, architecture, interior, and astrophotography applications.