"My experience" -that's the correct way to say it. Indeed - if you take a sharp picture with a lens, you have the right to say - it is a sharp lens because an unsharp lens cannot take sharp pictures. But it doesn't work the other way round - an unsharp picture is not (for a multitude of reasons related to the whole chain of possible causes of fuzzy pictures) an unmistakable sign of an unsharp lens. You just have to say - I did not manage to take a sharp picture with the lens.
That's what makes a comparison between lenses difficult - as soon as you need to qualify the slight differences in the lack of lens quality (obvious lemons apart) only technically serious tests will do. Otherwise you have no way to correctly judge if the fuzziness is caused by the lens or the lack of precise measuring.
Bookmarks