Steve Huff comments on the 16mm

"As most of you know, I am not a fan of zoom lenses but the 18-55 is about as good as any other kit zoom, if not better. It’s slow, and I wish it was smaller but it kicks the coating off of the 16mm, which I find VERY lackluster with the NEX-5n. The 16mm just does not produce nice looking images IMO with this camera, unless the copy I have is shoddy. They seem flat, lack color punch and have below average contrast. So the 18-55 I like. Maybe this is why Sony stopped offering the 16mm as a pack in lens with the 5n and upcoming 7. Hmmmm."
"

http://www.stevehuffphoto.com/2011/09/09/im-traveling-again-some-shots-from-the-road-with-the-m9-and-nex-5n/