Olympus M.Zuiko Digital ED 8-25mm f/4 PRO Lens - Brand New review
The Olympus M.Zuiko Digital ED 8-25 mm f/4 PRO didn't have any slip-ups and is an instrument which I can personally recommend without any objections. Its price, reaching $1100, is perhaps not that low but lenses with interesting, unique parameters never come cheap.
solid and weather-sealed construction,, very good image quality in the frame centre,, good image quality on the edge of the frame up from the maximum relative aperture,, negligible longitudinal chromatic aberration,, low lateral chromatic aberration,, proper coma correction,, moderate astigmatism,,...
very high distortion on RAW files,, noticeable vignetting at the 8 mm focal length (but only on RAW files).