Summary: I wish sony make this sharpness lens in other sizes! This lens I don't care about the plastic or the faster focus. This is my favorite lens I will never sell this lens. I suffer from pain in my wrist and this light lens is my favorite for my 24mp Sony A7 and the Sony A 57. The only thing negative is the lens hood, I lost one already because it's comes off very easy.
Summary: Fantastic lens from Sony. This stops down to f/2.8 creating very creamy bokeh. I use this both on my Sony A33 and my Sony A99 (full frame) and get amazing pictures. Tack sharp focus. This lens is comparable to what you would see in a much more expensive model.