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The Minolta is one of my FLOAT lenses (favorite lenses of all time), but it got the white spot disease. It's still sharp as all heck, but will flare up whenever a light source is in the shot. The combination of size, optical excellence, and ergonomics has not been equalled by anyone IMHO, Leica included. I remember long ago in SF speaking with a Leica rep at Moscone Center about this lens (must have been the 1980s or 90s), and he admitted that he wished that Leica made it. It was the optical equal and ergonomic master of anything Leica offered at the time.
I have both the 28 f1.9 and f3.5 cv lenses, and they are both great. The 3.5 gets almost as much love as the Minolta for size. The f1.9 has beautiful rendering and decent ergonomics, if, like me, you have big hands. But I wish I could just find medicine for the Minolta, since it would live on my M2 if it wasn't so "sick."