I don't see the 24 listed at your link. As far as a slew of negative review - don't see those either. I've yet to read a bad one.
from imaging resource
"
Conclusion
Considering the price, you would hope that the Sony 24mm ƒ/1.8 Sonnar T* ZA didn't disappoint - and happily, it doesn't. Sharpness is excellent even wide open, and other factors such as chromatic aberration, distortion and corner shading are well-controlled. The 24mm ƒ/1.8 proves to be an able companion to the NEX camera."
Michael Reichmann From Luminous Landscape did a rolling review and overall loved it.
Kurt Munger
http://kurtmunger.com/sony_nex_carl_zeiss_24mmid316.html
Conclusion
.
The
Sony CZ NEX 24mm F/1.8 lens produces outstanding results throughout the entire frame, which is not typical for a wide angle lens; in fact, it shows the best results of any wide angle lens I've tested yet, and that includes full frame lenses like the
CZ 24/2 and
35/1.4 G! Most wide angle lenses are mushy in the corners unless stopped down hard, but the NEX CZ 24/1.8 is actually quite sharp at F/1.8 in the corners! This lens is optically at its best between F/2.8-4, stopping down additionally is not necessary for sharper shots. A tid-bit that will make some people mad: I'm glad I don't have the Sony 35/1.4 G lens anymore, if I would've compared the Sony 35mm F/1.4 G using the A900, and the NEX CZ 24mm F/1.8 using the NEX-7 at apertures of F/1.8-4, the 35mm F/1.4 G would literally look like it was focused improperly, there would be that much difference at those apertures! Both cover the same area and have the same megapixels, so it's a fair comparison.