Edge to edge sharpness is simply amazing. I did a side-by-side with a TV 32mm plossl primarily to see if the 52deg AFOV provided the same TFOV as the 50deg plossl, (they are virtually the same with the TV getting an ever so slight advantage). But I soon ignored the width of field and instead enjoyed the crisp sharpness of the LE. Beautiful! So why the 9 instead of a 10? I didnt like the eyecup. It has a rubber disk blocking the outer half of the lens. This forces you to really get in close to see the entire FOV. The explanation is this protects the glass from wayward fingers but I would have preferred taking in the view from a more comfortable distance. Still a winner.