Voigtlander 35mm f/2 Apo-Lanthar - Leica M Fit. The optical construction consists of 9 groups with 11 lens elements, two of which are double-sided aspherical elements, five with abnormal partial dispersion and floating elements for optimal focusing performance. An excellent multiple coating and the apochromatic colour correction round off the technically complex structure. The 12 aperture blades form a round opening at F2.0, F2.8, F5.6 and F16, which enables a circular and also very balanced bokeh from a point light source,
