You can reader Gustav Kiburg full LA-EA5 Lens Adaptor test at Alphuniverse UK:
“My overall experience using the LE-EA5 adaptor with my old A-mount lenses was extremely positive. All the lenses I tried reacted quickly and gave me precise focus, and what surprised me the most was the accuracy of the Eye-AF and AF tracking. For those photographers still sitting on their old A-mount lenses, the LE-EA5 is a worthy investment!”