The Sony FE 28-70mm F3.5-5.6 OSS ($499.99 list) is the first zoom lens available for Sony's full-frame mirrorless camera system. It has the same limitations as most kit lenses, including some very noticeable distortion and soft edges at wider apertures.
Good center sharpness; Optically stabilized design
Lots of distortion at wide and telephoto ends; Soft edges unless stopped down