Voigtlaender 20 mm / F3,5 Color Skopar SL II

very weak, momentarily simply dismal image quality on the edge of the frame,, very high astigmatism,, huge coma,, significant vignetting on full frame.

The Voigtlander Color Skopar 20mm f/3.5 SL II Aspherical is a unique lens: it's the smallest ultra-wide angle lens available for full format DSLRs. Pancake lenses tend to have incorporated some compromises - usually they are comparatively slow and they...