Goodness. Is that voigtlander lens a heavy hitter/big contributor to the crispness? I spend time just staring - its terribly rich. I should be asking which lens you've found to be most helpful. I would think enlargement would have to be rather large for MF to show improvement.
Yes it is. One of my favourite lenses, just renders beautifully, all round lovely lens. Maybe too slow for portraits, but for general shots, especially detail work, the VC lens is hard to beat.