I bought this lens used some time ago to possible technical defects exclude in advance and was lucky the unit was in perfect condition. After I made a few hundred trips I have to say that I am very satisfied, the image quality is first class, a beautiful bokeh at full aperture and free from Cromatischen aberrations. Also here the often referred to as slow AF I can not confirm, sure it's not a lens for sports photography but every "normal" use, the Auto Focus always just. Conclusion: Highly recommended for the price at any time.