This April, Nikon announced a new lens, an AF-S version of the 50  f1.8. However, within hours of the new lens appearing on Nikon's  website, the page suddenly disappeared for over a week before the lens  was 'officially' announced. Upon official announcement, the lens was  revealed to be quite a deal with AF-S (duh), a distance window, a fast  f1.8 aperture, and a weather seal, all for a mere $225. Unfortunately,  given the situation in Japan, many expected it to be awhile from  official announcement to when the lens started hitting stores.
Wrong, the lens has obviously shipped as Photozone has just completed  a review of it. So, how did the 50 f1.8 AF-S fare against Photozone's  high standards? Short answer, very well.
First, the good. For any camera lens, optics are first and foremost,  and in this respect, the new 50 delivers the goods in a big way, easily  besting its older incarnation in the the area of edge sharpness. In  areas of chromatic aberration and vignetting, the lens is what one would  expect, namely that these things are present wide open but are  dramatically lessened by closing the lens up a stop. The build quality  is also excellent as the lens, whose barrel is high-quality, tightly  assembled plastic, is constructed on a metal mount. The rubber seal at  the mount is another useful feature that many more expensive lenses  don't even include.
Now, it's time for the bad. While the build quality of the lens is  high, there is one complaint: play in the focus ring. Simply put, one  has to turn the ring a few millimeters to actually get it to do anything  in regards to focus. Another con, despite being AF-S, the focus speed  is actually slower than on its older, AF-D cousin.
Final word? The new 50 is better in virtually every respect than the  old version. The only area where the new lens lacks: focus speed and  size (having that built-in motor necessitates a larger lens). Howver,  all is rosy everywhere else. The higher price? For all the added bonuses  you're getting (full time manual focus, compatibility with all Nikon  cameras, better optics, and the weather seal), the price increase of  about $100 over the 'D' version are fully justified, and worth it, too.
 


