Summary: I don't know how much I can really say about a lens but I've taken some beautiful pictures with it. It's my new favorite lens. Most recently I used this lens at a concert and was amazed at how good the pictures look.
Summary: It's quite sharp, has good Bokeh for portraits, and it sharp up close. I don't like the cheap feeling construction, but it's not an expensive lens, so I can't really knock it for that. The lens hood is nice and deep, and really helps with contrast in bright settings. Why only 4 stars? One reason: LOTS of chromatic issues. Shot at any aperture less than 4, there is a ton of longitudinal chromatic aberration/spherochromatism.
Summary: This lens produces magical shots. Bear in mind it's quite tight at 75mm full-frame equivalent (50mm APS-C) so you will struggle for indoor group shots, but for certain landscapes, for one-person portraits and for detailed close-ups, this lens is a winner. Just be prepared for frustration at the lens being much SLOWER to focus than the 18-55m NEX kit lens, and sometimes failing to focus altogether when the light gets dim.
Summary: Disclaimer: I'm not a pro, I'm just some guy. The Good: Very crisp images, Photos are super sharp and vibrant. Lots of metal used in construction, which gives you a sense that the lens will stand the test of time. Pretty fast autofocus. The Bad: Price... Price, when in manual focus you have to turn the ring for what feels like forever to bring things into focus. It would be nice if it could find focus faster in manual mode. Conclusion: Too expensive for what it is.
Summary: This is a beautiful Sony lens for my Nex 5r and 5t. I am a very long-time Leica user, early on as a professional in NYC, so that I am partial to compact, fast lenses. This lens is well balanced on my Nex cameras, and produces sharp as a tack results. I intend to use this lens in dance studios and in theatres in Gainesville GA and in Atlanta. Thank you Sony for the OSS and light weight.
Summary: I have been using my Sony NEX 5 for a couple of years now and love it but we now review restaurants and blog full-time (www.connecticutbloggers.com) so I wanted something that helped me take better photos without trying so hard. I decided just to by this lens and what a huge, huge difference it made day one. I can even put the camera on auto and it takes amazing photos (see above in the gallery - two cats, one orange, one black). I am super happy with this purchase.
Summary: I really do not understand why people ever wants to buy this lens. Why? why? It is over priced! All the 50mm f1.8 prime lenses like canon, nikon versions are about $100. And all the 50mm prime lenses are among the best optical quality among prime lenses. It is better to get a Canon FD 1.4 lens with about 60 dollars and that is f1.4, compact, and it has the best optics. You can mount it on all NEX cameras with an adapter that is only about 10 dollars.