Good quality adapter. Buyer beware, it will not allow ordinary M42 lenses focus to infinity, so do know what you are buying. I bought these for M42 lenses which can focus further than "infinity" and it works pretty well for them. Also it can be used for macro\portrait works. Perfect item for such a case - it just convert those lenses to K-mount with the ability to change them fast and easy unlike those adapters that allow infinity focus. Good stuff, just what I wanted, thank you!
Good quality adapter. Buyer beware, it will not allow ordinary M42 lenses focus to infinity, so do know what you are buying. I bought these for M42 lenses which can focus further than "infinity" and it works pretty well for them. Also it can be used for macro\portrait works. Perfect item for such a case - it just convert those lenses to K-mount with the ability to change them fast and easy unlike those adapters that allow infinity focus. Good stuff, just what I wanted, thank you!