Fujinon XF 14mm for about a year now, and it's become one of my standard lenses. It covers a field of view equivalent to a 21mm full-frame. Solidly made, but not stiff. A nice heft, but not heavy. A wide f/2.8 pulls in the light, but the lens is the same diameter as the slower Fujinon 18-55mm zoom. The 1/3 stop aperture increments are professional and welcome. It comes with a hood, but I never use it. The 14mm is a professional photographer's lens which produces great results paired to an X Series body. I would have been pleased to have this lens on any system, anytime.
28mm Elmarit it is not. The 14mm has plenty of distortion. It's not extreme, but it's there in the corners. If you like your architectural lines straight, this lens won't work for you. If you're like me and care about content over form, then the tweaked perspective isn't relevant. If anything, I like to exploit it to give a clearer sense of the space.
The following images are all full-frame, taken on an X-E1. They have been converted to achromatic, but no lens corrections have been made. The distortion you see is what you get straight from the lens.
multicoated, 007 Neutral filter on the Fujinons. Pulling lenses in and out of the bag while I work, scratches are inevitable. I would rather be able to work faster with the Fujis than to worry about the front lens element, so a filter makes sense.
So, take the advice of Tolkien and embrace the wide: “The wide world is all about you: you can fence yourselves in, but you cannot for ever fence it out.” — The Fellowship of the Ring