nemark: Knowing the (POOOR) quality of Sony lenses, I`ll wait some practical results, tests and comments to create my own opinion. Nice collection of focal lengths and apertures, but discussable q. (Don`t confuse Sony with Zeiss-for-Sony.)
Sony E lens are not all very poor. Only the 16mm is very poor. All others are pretty good. I have used my Nex5 with Nikon, Canon and Zeiss lens. I know Sony E lens is not as bad as some people say.
peevee1: 16-50 is OK. I guess depends on quality, E18-55 is incredibly bad for a modern lens.10-18 and 35 are somewhat overpriced compared to SLR competition (Sigma 10-20 lenses are $480, Tamron 10-24 are $450 etc).
The E18-55 is pretty good. I have used the nex5 with E18-55 and many Nikon, Canon lens. I do not see any difference between them. Only Nikon prime like 50mm f1.8 really impressed me but it is a prime lens.