I just got this lens in - used it 2-3 days
- and I'm impressed! Sharp wide open all over. Perfekt build quality.
Wide focusring makes it easy to fokus with mitten - important here
in the arctic wintertime. Fast autofocus. A lot of reviews out there...
I'm afraid my good old Leica R Summilux 80mm
with Metabone speedbooster got a serious competitor here!
Since this lens is so sharp wide open you
may use it wide open most of the time (?) - so a ND filter during
daytime would be a good idea. I got a 8X ND for this 62mm lens and
that works fine on snow covered ground in daylight.