Comment by nzealand

In terms of sharpness, each lens is different. And the sharpness varies depending on the focal length (zoom), aperture and the sensor.

A great way to visualize this, is to take a look at the sharpness of the nifty fifty canon lens

https://www.imaging-resource.com/lenses/canon/ef-50mm-f1.8-s...

Click into the heat map https://www.imaging-resource.com/lenses/canon/ef-50mm-f1.8-s...

Move the aperture from 1.8 to 2.8, and note how the sharpness increases, starting in the center of the lens.

Then at about 16, diffraction kicks in and things start getting less sharp again.

Things get even wilder when you introduce variable zoom and different camera bodies.

It's a great way to visualize the good/fast/cheap pick two tradeoff's of lenses.