Sony SEL20F28 20mm f/2.8
Crutchfield Customer Review (What's this?)
This is a great compact lens. It's great for street photography and a good lens to have when you want to keep your camera compact. It's pretty sharp, even wide open at f2.8 but you can see a little softness towards the edges of the frame.
Pros: Compact Lightweight Fast AF
Cons: A little soft on the edges when wide open.