I have bought this lens online for my A700 DSLR. On receipt I found it said on the box "compatible with A65 and A77" but this was not stated on the seller's web page. The lens fits my camera but will not focus either automatically or manually. I believe this is a compatibility issue, rather than a faulty lens.
I have previously bought other lenses eg Tamron without problems and thought the only question was whether it was suitable for a Sony Alpha mount. Indeed I have lenses that work without problem on my old Minolta 35mm camera.
Any advice gratefully received, thanks.