Hello I am photographer for 30 years and have been working with a lot of cameras and lenses but why is everyone only looking at sharpness? Its like driving daily in a 400 pk horsepower Porsche on at your daily destination; but a Porsche has no comfort at all ! The Sigma Art lenses are flat and have no character ! And I know it because I worked with a lot of lenses; they are only sharp;' is that all where it is going about? having a 400 horsepower car at your daily traject ??