Lightroom sharpening issue

[sincere]

For some reason, no matter what pic i try to sharpen, i dont see any difference. Or is my 50mm1.4 so sharp already?

 

[Garbz]

There's 4 different settings. You need to know each work to know how to get them working in a way that it makes a notable difference.

For one thing, if you use the pixel radius of 1 then even if you crank it sharpening to max you won't notice an improvement unless you zoom to 100%.