This TopPro lenses are addictive and the imaging performance is at its best. The only drawback is perhaps the right loud AF, but I hate it so far not disrupted. Also, the AF performance is caused by the technology is not the fastest of all. But with appropriate Vorfokussierungen there are also options here to compensate (in conjunction with E-M1) Processing, feel very good. Very sensitive zoom ring. At an E-M1 already weighty with sun visor. Aperture now even require appropriate lens diameter and with MFT / FT still moderate and the lens is fully open glare fit. Would I buy again :-)
