This objective is fantastic, I use it with a NEX3 but need an adapter ring (LAEA1). The result is extraordinary pictures, it was a mind-blowing definition. Thanks to the Sony ring autofocus works great as minor complaint can complain about the slow pace of development but frankly acceptable and what is the bomb bar. I was looking for a target for portraits and this is the product that entirely. I dare not imagine the result with a focal objective 1.4 (for the wealthy).