Minolta make great lenses. This is well known and the manual focus tele-zoom 50-135 is no exception. Precisely made, solid build. A very useful focal range with a fixed F3.5 aperture throughout the range, Use with your MD mount camera or easy to adapt for use with Sony E-mount focus peaking camera bodies via the K&F MD-NEX adapter available as an option with the lens. Ask any questions about this lens:  Alex Donald