Voigtlander's compact ultra-wide for M or mirrorless — 21mm f/3.5 with aspherical correction.
The Voigtlander Color-Skopar 21mm f/3.5 Aspherical is a compact ultra-wide prime — available in various mount versions. The VE designation may indicate a specific electronic mount version. The 21mm provides dramatic ultra-wide on full-frame.
Optically good — aspherical element improves edge performance at 21mm. Compact Color-Skopar design. The f/3.5 is slow but depth of field at 21mm is enormous. Manual focus — appropriate for ultra-wide where DOF covers most distances.
Various mount versions available. Very compact and lightweight. Manual focus. Aspherical element. Full-frame coverage. The VE designation may indicate Sony E-mount version with electronic contacts.
Available used at mid-range prices. The slow f/3.5 limits astrophotography but is adequate for landscape and architecture. For compact ultra-wide enthusiasts wanting Voigtlander quality at 21mm in the smallest possible package.