This is a great little wide-angle lens that I've used for a few years on my GH3.  It works very well and I haven't had any issues whatsoever with functionality; focus and aperture work well.  I'm only selling to downsize a bit of my overall clutter, otherwise a great fun lens to use.  It was fully serviced about a year ago for what looked like a little bit of haze and a little oil on the aperture blades.  A very minor amount of oil has begun to show up again.

Comes with rear and front caps.

I can include a nikon to m4/3 adapter if you let me know.