This combination works very well. I've tried the Alpha 85 f2.8 and the 35 f1.8 Alpha lenses so far (because they are cheap, small and image quality is good). Both are pretty snappy to focus and the image quality is quite good. I thought the adapter was much larger than it really is and adds nearly nothing in weight when carrying it when out on a shooting session. It also adds phase detect focusing which is very nice to have. This is the first image I've posted using this equipment and I'm hoping to test and post some more images using these two lenses.