This is possibly one of the best lenses I've used mechanically and optically. I've been in working settings where I've grabbed this one over L glass, too many times. Sadly, I must let it go because my telephoto broke.
Comes with Fotodiox MFT adapter, which is very solid with no play. Comes with a B+W ND .09 filter and Haze filter (which has been on it since day one) - everything you need to get shooting!