>>87484They are sharpened by software calculations in the camera. But in that pic, I can't see a truly sharp edge anywhere. Granted, it's an effect that doesn't show up unless you look at a 100% size pic on a monitor and look for it, but you could achieve that same quality with a lower-pixel sensor and have less noise at low light to go along with it.
Pic is a 6mp image blown up to your pic's size and resharpened for comparison.