I am going to buy a 20mm lens for my Nikon d700, I am looking at the Voightlander Skopar or the 20mm AI Nikkor both are manual focus which I prefer both are listed at about $400+ so does anyone have any experience with either lens that would indicate which one would be the sharper of the two. I have a 28mm Nikkor that simply is not eye watering sharp. I don't know if it is this specific lens or this lens on a digital, it is also a MF AI lens, it is okay sharp for like PR work but it is not that kind of sharpness like the 55 micro Nikkor or 105 AI or 200 AI or 300 AI that I have, but I need a wider angle lens any way and I have never bought a non Nikkor lens. So, anyone have any ideas? Joe