Regarding the article on using ultra-wides on the NEX 5N and NEX 7, a quibble. The article only tests ultra-wides on the 5N. The 7 isn't tested. But given that you mention both cameras in the "What's New" page, the inference is that the results will be the same on the 7. BUT, from what I've seen on the web (specifically, Steve Huff's review of ultra-wides on both cameras), there is a world of difference between how ultra-wides perform on these two cameras. The 5N performs great. No color shifts. The 7, on the other hand, with the exact same lenses, exhibits massive magenta casts with a 15mm lens, significant casts with a 21mm (I think it was a 21), and moderate casts with a 24mm lens. Which is terribly disappointing, since I really like what I see in the NEX 7, but I wanted to use it with Leica glass, and given the 1.5x crop, that means being to use wides without a lot of fuss is almost mandatory (for me at least).
I'm just sayin....