chrispirak5 years ago000there is a technical optical test with measurementsShow in original language (German)HaZet63305 years ago • purchased this product011purchased this product Helpful answerI don't know. But I am very satisfied with this lens. I recommend taking a look at "Google" or "googling" something. Have fun.Show in original language (German)CommentAnonymous5 years ago • purchased this product000purchased this productA super lens - even without measurements.Show in original language (German)Comment1 commentAnonymous5 years ago • purchased this product000purchased this productTake a look at dpreview or other relevant websites, there are masses of tests like for every lens.Show in original language (German)Comment1 comment