12-01-2011, 02:36 AM
The Nikon 20 is sharper at the margins than the Voigtlaender 20, which never really comes good. See sample images at f8 here
http://www.lenstip.com/274.11-Lens_review-Voigtlander_Color_Skopar_20_mm_f_3.5_SL_II_Aspherical_Summary.html
The Voigtlaender CA is much better and distortion marginally better, but CA can be corrected easily with the Nikon system. And, of course, the Nikon has AF.
http://www.lenstip.com/274.11-Lens_review-Voigtlander_Color_Skopar_20_mm_f_3.5_SL_II_Aspherical_Summary.html
The Voigtlaender CA is much better and distortion marginally better, but CA can be corrected easily with the Nikon system. And, of course, the Nikon has AF.