I am a serious hobby photographer since 2009, and I shoot theatrical shows, dance shows, and performance art in general, as well as some portraits, landscapes and still life.

The centers were sharp, but the corners were soft and I never felt I got the kind of sharp landscape photos for which I would normally use the lens.

On the other hand, landscapes seem to benefit dramatically from this new formula, as the whole frame appears evenly focused and it is quite easy to sharpen in post and for printing.

That said, for me, this lens is as sharp as it can be

and it removed all traces of it, as well as, correcting much of the distortion

That said, for me, this lens is as sharp as it can be

and it removed all traces of it, as well as, correcting much of the distortion