Ultron 28mm f1.9 verses f2

[paulcurtis]

I doubt any of us have both lenses but there was a reference to the sean reid review where he does compare both of them and his conclusions were listed there.

In general the 1.9 is lower contrast but flares more (in fact those are probably the same thing). Sean Reids review shows the 1.9 being a bit sharper too but he also points out sample variation issues, so your own milage may vary.

cheers
paul