9 out of 10 points and recommendedlight, tiny, optically superbcorner shading up till f4 not great but easily adjusted out. bad CA under certain conditions too (but dxo nukes them)
if 40mm field of view is your thing, you've got nowhere else to go in the M4/3 system.reviewed May 11th, 2012
optically, i had to just 'get over' the whole distortion and CA auto correction issue. so i did :) good god this thing is sharp. have had all manner of top shelf lenses over the years, but the micro contrast on this thing is truly stellar.
colour and contrast are just as good.
only real weakness (provided you've got decent CA removal software or dxo), is focus speed because it's good but not brilliant.
other than that, it's a no brainer and actually feels like it will be with me for many years to come.
9 out of 10 points and recommendedEverything... just one of those rare gemsIt's not black
better built than you'd imagine from some of the reviewers. optically? just to die for... this is such a nice lens. i'd feel very comfortable paying twice the price because 1. it doesn't have any real distortion, 2. it focuses instantly, 3. colour and contrast are gorgeous and 4. bokeh is like butter. and i should have mentioned sharp, because it's brutally sharp.reviewed May 11th, 2012
and my copy is perfectly centred. judging by some reviews, i guess that means i must be pretty lucky.
if you've got even the slightest doubts, forget it, this is the best M4/3 lens out there. the price is just silly for the optical quality.