According to the test on; the digital picture, results of the ISO 12233 Chart 100% Crops are better with the sigma new macro lens. http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=790&Camera=453&Sample=0&FLI=0&API=0&LensComp=674&CameraComp=0&FLIComp=0&APIComp=0 And with the other results on flare distortion and vigneting it's pretty impressive . What do You think about it?