[obican]

The 16/1.4 is weather-sealed and very good. Also, I like the extra metal lenshoods of the f/1.4 family more than the cheapo f/2 or the metal types whoch are cylindrical (and a bit less useful). This lens I would not change against a f/2 version, while the 23/2 still is tempting for me.

 

16/1.4 is indeed a very good lens but not many people can afford it and not everyone wants to walk around with such a huge lens. I absolutely love it and it's one of the first lenses I'd consider for building a X-System setup but even then, I'd be tempted by a smaller 16/2 offering. Also I've directed a lot of my friends into buying Fuji and most of them simply use the 16-50 kit lens on the wide end because 18mm is too narrow and 1/1.4 is too big/expensive.

 

 

The 18mm f2 won't do it for you?

 

It's not a very good lens and I hate the focal length. Between 24mm and 40mm is a whole area of uninteresting focal lengths for me. 

 

Seriously, otherwise I'd keep the Sigma 19mm I had, buy the Sony 28/2 for my A7, go into Contax G and/or Leica M system without a doubt. I just can't like 28mm lenses.