I picked up one of these the other day. I was tricked by its claim to include an “autofocus chip” into believing it would autofocus (via screw, most likely, since it doesn’t look wide enough to have an internal autofocus motor). Well, it is indeed non-AF. That chip just makes my D90’s autofocus viewfinder light turn on when the subject is in focus.
I’m still considering keeping this thing. I like the bokeh so far (just a few tests since late last night) and I really like the build quality. Specifically, it feels solid (heavy) and the focus ring is nice and smooth.
24 August 2011 update: I miss this lens. But I couldn’t stand having to manually focus it, especially since my favorite target is a five year old girl who is always on the move.