Sorry, my fault !
In the comparison tests, the images in the left column were shot using the Planar. The images in the other 2 columns were shot with Voightlander lenses, a 50mm 1.5 Nokton, in the middle, and a 50mm 2.5 Color Skopar in the right. If you click in the image you'll get a larger image. The Cosina site says that the Biogon 21, 25, 28, 35 and the Planar 40 will be made by Cosina in Japan, while the Distagon 15 and the Sonnar 85 will be made by Zeiss in Germany. The Japanese site is basically an IT news site much like News.com. So you better judge yourself by the test images. Though, they were all shot in the streets of Tokyo, not in a studio, so you get the idea. Basically the site says the Planar is a very sharp lens at its center, but maybe a litle soft in the borders. The last group of images were all shot with the Planar. I hope this helps you.