Tamron 28-70mm 1:3.5-4.5 50A Adaptal 2 for K/R mount lens #9003965
Adaptal 2 for K/R (Konica) mount
Don't remember where purchased nor amount paid. Glass clearance and clear and aperture oil free and snappy. All looks very good except for the front lens filter mounting ring which has been broken probably due to a fall. All else seems to work smoothly.