>>3664009No, I don't. I'm undecided between the Konica 28mm, to get a complete set, and the Biogon 25mm. I can only tell you that Konica's manufacturing quality is on-par with Leica ( so a notch above Minolta ). Optically, you don't want to shoot wide open like a Leica, but stopped down they're a match. Konicas are bigger too.