Tokina 11-18mm lens is at BHphoto. Adorama.
SonyAlphaBlog tested the lens and concluded:
The Tokina 11-18mm F2.8 atx-m is a very good wide angle zoom for your Sony APSC camera. It will be ideal for Landscape, Architecture but can also be used for Astrophotography
Its build quality is good, the lens is light and quite compact. AF is good. Optical performances are excellent in the centre at 11mm but only good at 18mm. Results are very good at all focal lengths on the entire field as of F5.6. Distortion and vignetting at 11mm should be slightly corrected but nothing serious. Coma is a bit visible at F2.8 but gone at f4. Color rendition and level of CA are also very good. Resistance to flare is ok but not very good
Christoph Anagnostopoulos also reviewed the lens and concluded:
A versatile ultra-wide angle lens that can be used in many shooting scenarios, with excellent optical quality that comes in a compact size form. The price tag makes it even more appealing. Ideal for travel and real estate photographers.