6 out of 10 points and not recommendedBuild QualitySoftness Wide open, slow AF
Lens delivers good results at 5,6 - 11 and this at f4.0 .... well so did my Oly kit lens. I bought this for the speed but 2.8 changes to 3.5 rather quickly and shooting 14mm or 54mm at highest aperature doesn't produce any crispness. Certainly not compared to the price difference of the kit and this.reviewed January 9th, 2008 (purchased for $600)
Another con, is the autofocussing, trying to autofocus wide-angle outdoor shots is almost impossible.
I am very disapointed with this lens which is the least performing part of my 7-14 14-54 and 50-200 set. I use it however sinve there is no alternative whatsoever, but I would of expected an overall higher quality lens.
I obviously found this out upon purchase but thought it had something to do with camera setting perhaps.... this is not the case, it's clearly the lens.
The lens is good, but certainly not worth the money.