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Pros:Objective fast. Great sharpness at all apertures. Good construction. Price.
Cons:It 'a great pelino in diameter mounted on Olympus Pen bodies, but to find fault at all costs.
Opinion:In my day, the variable focal length lenses were attempts teconologici pathetic, so I learned to use and love fixed because even at my age move back and forth is good for health. I bought this to replace and / or complement the Olympus 17mm f / 2.8 pancake which is fast but not too much and is crisp but not too much. The Panasonic has a little longer as a focal but it's really fast and sharp as a razor. In my frequent rounds for the world's cities it is truly irreplaceable and for owners of any micro 4/3 is a straconsigliato purchase. Bought at € 257.60 at the beginning of 2017.