http://www.slrgear.com/reviews/showproduct.php/product/1490/cat/45Seems to be fairly good enough on APS-C for those things that are measured. And their results resemble my practical experiences.But still, there are many things that they cannot check with their tests, one thing is about the colour rendition. IMO, the image colours produced by the 40XS lens are somehow lowly-saturated. And, the
